My Google Summer of Code 2017 project. This is just development part. Intended GRASS GIS modules and final code will be at https://svn.osgeo.org/grass/grass-addons/
Yes, that would be very much appreciated! Otherwise one has to identify the "culprit" manually, if the whole import fails because of one procedure (which can be one of 100)...
When there is no data for some procedures for selected time range, allow GRASS to ignore them and import the rest.