Table 4.91 https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table4-91.shtml Smaller than first limit Greater than second limit Between first and second limit. The range includes the first limit but not the second limit. Greater than first limit Smaller than second limit Smaller or equal first limit Greater or equal second limit Between first and second limit. The range includes the first limit and the second limit. Greater or equal first limit Smaller or equal second limit Between first and second limit. The range includes the second limit but not the first limit. Equal to first limit Missing