Wrong units in datafiles

[corviday]

According to Trevor, the following variables have the wrong units:

Variable	Current Units	Correct Units
rp20pr	mm/day	mm
rp50pr	mm/day	mm
rp5pr	mm/day	mm
sdiiETCCDI	mm/day	mm

Units are extracted directly from the datafiles, so the solution should just be updating the affected datafiles and re-indexing them, perhaps also letting whoever generated the datafiles know that they ended up with the wrong units.

This is distinct from the issue of variables with scientifically correct, but non-user-friendly units.