=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Antifer             190/046 RLR(1978) is 15.5m below RepereD(1981)
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Antifer             190/046 RLR(1978) is 15.5m below RepereD(1981)
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 26-Aug-2010
Benchmark at Antifer is D (1981) 13.377m above TGZ. RLR factor is 2.123m.