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ARCH&UD 596

Directed Individual Research and Study in Architecture and Urban Design

2 units

Sections & times

Tutorial.

Fall 2026: 20 sections. All of them are open. The oldest of these readings was 3 hours ago.

Grades

Graded S/U, so there is no average to report.

Graded S/U: 58 records over 5 terms.

In the A range

-

no letter grades in the record to count

D, F or W

-

no letter grades in the record to count

Taken pass/no pass

-

this course is graded S/U, not pass/no pass

The registrar's own records: Fall 2021 to Fall 2025. Every instructor is pooled here.

What is inside that record

2 of those terms are summer sessions, and summer sessions are counted here.

The table below splits them.

Historical grades for ABE, HITOSHI, across recorded terms. The course summary above includes all professors.

No grade history is available for this professor in this course.

By instructor

Predicted GPA, raw average, sample size, terms, A range and the workload reviewers reported for every instructor with a grade record in this course
Instructor Predicted GPA Raw n Terms A range Workload Fall 2026
OSMAN, MICHAEL reviews ↗ S/U 34 S/U 3 - - Open, 2 seats left
IBANEZ, MARIANA reviews ↗ S/U 24 S/U 2 - - Open, 10 seats left
Why Predicted is not the Raw average

“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.

Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.

Reviews for ARCH&UD 596

Workload and assignments

Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.

dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.

Read the source reviews

From the registrar's catalog

Tutorial, to be arranged. May be repeated for credit. S/U grading.

Sections in Fall 2026

Seat counts as of : the oldest of these 20 readings. Seat readings are snapshots, not live availability. Their timestamps show when dibs last checked.

Final enrollment, averaged across each term's sections: between 11 and 12 a term over 3 terms, summer excluded, most recently 11 in Spring 2025. That is the shape across years, not this term, which is above.

From the people who took it

Student reviews

What taking ARCH&UD 596 was like: the work, the teaching, and what students wish they’d known.

Write a review

Your experience could be the first.

No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.

Looking for more perspectives?

External reviews are separate and do not count toward the dibs rating.

Read reviews on BruinWalk

Community guidelines

Seats over time in Fall 2026

How each lecture has filled since dibs first saw it. This course runs 20 lectures; the legend under the chart picks one.

A dot is a reading where something moved: the seat count, the status, or the waitlist.

What a flat run means, and where a line starts

Flat between dots means it did not drift, it held and then jumped, and a line starts when dibs first saw that lecture rather than reaching back before it existed. A lecture that has never moved draws a flat line across the whole window, and one with two or three readings draws a line joining them, which is too few to read a trend from.

Tut 1 · Abe, H. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 2 · Amunategui, C. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 3 · Ayata, A. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 4 · Brooks, M. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 5 · Craig, S. · 2 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, filled by 2.

2 of 10 · 8 left
19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.2 of 10 enrolled at the newest reading, 3 hours ago, with 8 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 2. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 6 · Cuff, D. · 6 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, filled by 6.

6 of 10 · 4 left
19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.6 of 10 enrolled at the newest reading, 3 hours ago, with 4 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 6. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 7 · Daly, K.M. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 8 · Denari, N.M. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 9 · Elimam, S. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 10 · Huljich, G. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 11 · Ibanez, M. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 12 · Inaba, J. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 13 · Koerner-Al-Rawi, J · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 14 · Levin, A. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 15 · Lynn, G.S. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 16 · Osman, M. · 8 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, filled by 8.

8 of 10 · 2 left
19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.8 of 10 enrolled at the newest reading, 3 hours ago, with 2 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 8. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 17 · Payne, J.K. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 18 · Roberge, H.L. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 19 · Sandmeier, N.S. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

Tut 20 · Sharif, M. · 0 of 10 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 1 month before that, unchanged.

0 of 10 · 10 left

Both readings say 0 of 10.

19 Aug 04:4010 Sep 01:211 Oct 22:02 · 3 hours ago
dibs read 168 of the 522 hours its hourly record covers, 32%, and did not look in 354. dibs had no hourly record before 10 Sep, which is the other 529 of 1051 plotted.0 of 10 enrolled at the newest reading, 3 hours ago, with 10 left. Seats from 19 Aug 04:40 to 1 Oct 22:02, 0 to 0. The line is flat across the whole window: recorded enrollment counts match. Changes between reads may be missed. dibs read 168 of the 522 hours its hourly record here covers, 32%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 354 hours dibs was keeping a record and did not reach this section. Nothing before 10 September at 05:00, where this section's record starts, has a read either way, which is 529 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.