Examples of tables

At first glance the two tables below look very similar, but test them with assistive technology. Screen reader software reads from left to right, top to bottom. Which version makes more sense?

Vertical table without Headers.

Monday Tuesday Wednesday Thursday Friday
9-5 7-2 all day 9-12 10-8
Classroom 3 Library Dining Hall Classroom 2 Classroom 1

Screen Reader reads: Monday, Tuesday, Wednesday, Thursday, Friday, 9-5, 7-2, all day, 9-12, 10-8, Classroom 3, Library, Dining Hall, Classroom 2, Classroom 1.

Horizontal table without Headers:

Monday 9-5 Classroom 3
Tuesday 7-2 Library
Wednesday all day Dining Hall
Thursday 9-12 Classroom 2
Friday 10-8 Classroom 1

Screen Reader reads: Monday, 9-5, Classroom 3, Tuesday, 7-2, Library, Wednesday, all day, Dining Hall, Thursday, 9-12, Classroom 2, Friday, 10-8, Classroom 1.

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