API questions re: rain measurements

[peter]

Based on my understanding and experience:

@vinceskahan

My reading is that index 12 is rain in that reporting period (one obs_st period from the hub).

Correct

@vinceskahan

Index 19 (Websocket) and 18 (REST) seem to be rain for that date in total - correct ?

Not quite. This is the same as index 12 but after NearCast calibrations have been applied

@vinceskahan

What is the difference between items 19/20 (Websocket) or between items 18/19 (REST) ?

20 (websocket) is the post-NearCast corrected total daily rain accumulation. Same with 18 (REST)

Rain in the API is currently sub-optimal, however. There is no way to access raw values that haven’t been NearCast corrected. See Changes to precipitation API - Developers - The Tempest Weather Community