Blue Line NB data error for Wood Island

[alexmturner]

Describe the bug For northbound blue line trips starting or ending at Wood Island, travel time data seems to be missing since 29 Sep 2023. It also looks like this might be causing the slow zone detection algorithm to believe that the slow zones still exist. This "no data"

To Reproduce

1. Go to the blue line slow zone page
2. Under the section "Northbound segments", click either of the two remaining slow zones
3. See the new window with missing data (screenshot below)
4. Edit the stations to be Airport to Orient Heights
5. See that the travel times have recently gone back to the old baseline (screenshot below)

Alternatively, switch to the single-day view and see the "No data available" error under travel times (screenshot below)

Expected behavior Travel time data should not be missing

Screenshots Example multi-day missing data:

Screenshot showing those two slow zones have actually resolved:

Single day view:

Device Info (please complete the following information):

• Device: Macbook Air laptop
• OS: Mac
• Browser: Chrome
• Browser Version: 121

Thanks for putting these dashboards together! Definitely appreciate them a lot

[nathan-weinberg]

@alexmturner Thanks for opening this! Unfortunately this issue stems from a data collection issue from the T's side - @devinmatte and I been in contact with them about it - they have a fix planned and hopefully it will not be a problem moving forward but we're not sure yet if we'll be getting backfilled data for these dates or not :face_with_diagonal_mouth:

[alexmturner]

Thanks for the update and explanation! Even if the data doesn't get backfilled, great to see new data coming in now :)