Undocumented value for precipitation type?

Sorry if this has been documented somewhere already but I’ve searched through the forum a bit with no luck.

Using the websocket I’m occasionally getting obs_sky observations that look like this:

obs": [ [ 1575663840, 2927, 0.09, 0.485204, 0.0, 0.0, 0.0, 0, 3.42, 1, 24, 3.510091, 3, 3, null, null, 0 ] ]

According to the websocket documentation for obs_sky, index 12 is a precipitation type and the expected values include 0 = none, 1 = rain, 2 = hail. But I’m clearly getting a ‘3’ in index 12 from time to time. What does the 3 correspond to?

3 is rain and hail mixed.

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