This folder contains the forecats for monthly
precipitation. The control files describe the
metadata. For example (August Initial Condition),

JunIC_nmme_monthly_precp_anom.ctl

has the following metadata.
-------------------------------------------
undef -999.0
title prate.bin
options little_endian
xdef 360 linear 0.000000 1.0
ydef 181 linear -90.0 1.0
tdef 6 linear 15sep1982 1mo
zdef 1 linear 1 1
vars 2
precip 0,1,0   0,1,7,0 ** precip anom mm/day
anom 0,1,0   0,1,7,0 ** precip anom mm/day
ENDVARS
-------------------------------------------

Longitude dimension has 360 points, spaced 1deg
from 0 meridian progressing eastward.

Latitude Dimension has 181 points, spaced 1deg
from 90S to 90N.

Time dimension has the 6 monthly forecasts.
For August Initial Condition the six forecasts
are for the months of 

September
October
November
December
January(2019)
February(2019)
 
The name of the variable is "anom".
The units are mm/day.
-------------------------------------------
A sample grads script (precip.gs) is provided