Review Requested: mlab-annotations-explained

[jduckles]

📄 Source | 🌐 Rendered

• In queries: change ndt7 to ndt7_union

• In queries: limit the date range (e.g., to a single date or even less)

• Testing the first query (about the region), it returns only Null regions. Needs to be fixed. (all queries should be tested manually for correctness, and volume of data that they consume)

[sermpezis]

I updated the description of the issue with detailed changes that are needed