[chaindelay] 
'last edit 261010
'(utc) means chain following UTC instead of Loran time, discontinuous on leap seconds

'GRI ms     'since yyymmdd
6731=0      '250513
8000=113.05 '170101 (utc)
8830=88.3   '241006 (swapped A-B)
9930=0      '210819
7950=122    '170101 (utc)
5990=55.5   '260919 (Caucasian Chayka)
5990=0      '260501 (U.S. eLoran)
5960=53.8   '170101 (utc)  5960Z -0.5 ms since 260728
5970=8.5    '260906
6000=0      '170101 (utc)