# CODE TABLE 6.0, Bit Map Indicator

0 0  A bit map applies to this product and is specified in this Section
1 1  A bit map pre-determined by the originating/generating Centre applies to this product and is not specified in this Section
# 2 253  A bit map pre-determined by the originating/generating Centre applies to this product and is not specified in this Section
254 254  A bit map defined previously in the same "GRIB" message applies to this product
255 255  A bit map does not apply to this product