The files contain the following ranges of SHA-1 hash values:

DFRC_RDS_201302_A 0000000000000000000000000000000000000000
-3FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
DFRC_RDS_201302_B 4000000000000000000000000000000000000000
-7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
DFRC_RDS_201302_C 8000000000000000000000000000000000000000
-BFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
DFRC_RDS_201302_D C000000000000000000000000000000000000000
-FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF