bucketizer.min.forbid-nulls function returns the min of all the values found for each bucket of a bucketized Geo Time Series™.
The associated location and elevation are those of the selected value. If the min value is encountered several times, the selected one is the one that appears first chronologically.
bucketizer.min.forbid-nulls function can be applied to values of any type, when applied to BOOLEAN types, the value true is considered greater than false.
If a value is NULL in the bucket, the result is NULL