Why Data Tables Need to Be Accessible
An accessible data table is important because it helps all users understand the information clearly, including people who use screen readers. If a table is not coded properly, someone using assistive technology might not understand what each number or piece of data represents.
To make a table accessible, we need to use proper HTML elements like captions, table headers, and scope attributes. These help define the structure of the table so it makes sense when it is read out loud by a screen reader.
Example Table
| Planning Unit | A | B | C | D | E | F | Total Mileage |
|---|---|---|---|---|---|---|---|
| 1. Front Range | 1.2 | 5.5 | 28.4 | 48.4 | 10.5 | 6.3 | 100.3 |
| 2. Longs Peak | 1.4 | 0 | 0 | 22.9 | 3.7 | 1.8 | 29.8 |
| 3. Wild Basin | 0 | 0 | 0.3 | 27.1 | 11.1 | 1.8 | 40.3 |
| 4. West Valleys | 0 | 0 | 0.6 | 46.3 | 16.7 | 4.1 | 67.7 |
| 5. Never Summer | 0 | 0 | 0 | 21.4 | 4.0 | 3.3 | 28.7 |
| 6. Black Canyon/Roaring River | 0.3 | 0 | 0 | 13.2 | 13.4 | 1.5 | 28.4 |
| 7. Trail Ridge | 0.7 | 0.5 | 0 | 0 | 5.9 | 5.0 | 12.1 |
| 8. Kawuneeche Valley | 0.8 | 0 | 8.7 | 1.3 | 0 | 0.2 | 11 |
| 9. North Fork | 0 | 0 | 0 | 5.2 | 8.0 | 0 | 13.2 |
| 10. Poudre | 0 | 0 | 0 | 17.7 | 1.0 | 0 | 18.7 |
| Total Mileage by Standard | 4.4 | 6.0 | 38 | 185.8 | 91 | 25 | 350.2 total parkwide |
Conclusion
Overall, an accessible data table is not just about displaying information — it is about organizing it in a way that everyone can understand. Using proper structure makes the table more usable and follows accessibility best practices.