Table4.2.1.1 https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table4-2-1-1.shtml CPPOP Conditional percent precipitation amount fractile for an overall period (encoded as an accumulation) kg m-2 PPOSP Percent Precipitation in a sub-period of an overall period (encoded as a percent accumulation over the sub-period) % POP Probability of 0.01 inch of precipitation (POP) % CPOZP Probability of Freezing Precipitation % CPOFP Percent of Frozen Precipitation % PPFFG Probability of precipitation exceeding flash flood guidance values % CWR Probability of Wetting Rain, exceeding in 0.10" in a given time period %