The percent of time raining is defined for each gridbox (grids described below) as the percentage of time over a month that at least one IR pixel in a given gridbox was colder that 235K (the GPI rainfall threshold). Each file contains one direct access record in IEEE binary ("big_endian") which contains the statistics for 1 month. Directory "data_1deg" contains the data on a 1x1 degree lat/lon grid; Directory "data_2./5deg" contains the data on a 2.5 x 2.5 degree lat/lon grid. Missing values are represented by values of "-9999.". Legitimate values are in units of percent of time of the month that rain (as defined above) was observed somewhere in the gridbox. For users of the graphics display software "GrADS", a ".ctl" configuration file is included. ----------- data_1deg: The file names are: pct_time_raining_yyyymm, where 'yyyy' is the year and 'mm' is the month. The size of each record (and file) is 115200 bytes: 360 x 80 x 4. Each record is a 360 x 80 array of values oriented from 39.5S -> 39.5N in the "j" direction (j=1 is 39.5S, ..., j=80 is 39.5N) and from 0.5E -> 0.5W (i=1 is 0.5E, ..., i=360 is 0.5W). The coordinates represent the center of each 1 x 1 degree lat/lon box. ---------- data_2.5deg: The file names are: pct_time_raining_2.5deg_ yyyymm, where 'yyyy' is the year and 'mm' is the month. The size of each record (and file) is 18432 bytes: 144 x 32 x 4. Each record is a 144 x 32 array of values oriented from 38.75S -> 38.85N in the "j" direction (j=1 is 38.75S, ..., j=32 is 38.75N) and from 1.25E -> 0.5W (i=1 is1.25E, ..., i=144 is 1.25W). The coordinates represent the center of each 1 x 1 degree lat/lon box.