=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 14-Jul-2010
Data for Ambarchik 1950-2000 was previously in the database these values where printed out and stored in a box file on top of one of PSMSL roller front cupboards. A revised listing
1950-2009 was downloaded from the Arctic and Antarctic Research Institute website these were then loaded onto the database. The RLR factor remains 7.000m
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 13-Aug-2013
After the recent download of data it was noted that some of the historic values differed slightly. The whole dataset has been re-loaded.