1931 - 1958 values based on readings of high and low waters.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Bombay (Apollo B)   500/041 RLR(1964) is 13.0m below BM 2(PP)(1)
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 04-Aug-1994
For a discussion of interannual variability of sea level along the coasts of Pakistan and India, see Clarke and Liu, Journal of Physical Oceanography, 24, 1224, 1994.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 06-Dec-2002
SMRC Newsletter Jul-Dec 2001 reports high E coast correlation with SOI and MSL. MSL is much higher during La Nina tropical cyclones than during El Nino.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 15-Apr-2009
Benchmark and datum details for 2005/6 remain the same as previously so the same RLRFAC was used.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 16-Sep-2010
Benchmark for the historic data up to 1965 was BM 2PP1 up to 1936 the datum was 9.132m below this benchmark. For data 1937 onwards the datum was 'Chart Datum' with BM 2PP1 being 8.522m above this. In 1966 the benchmark was changed to BM 5/88 7.44m above chart datum.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-Jun-2014
Please Note that the monthly mean sea level values for the period 1931 to 1936 were reported only to the nearest tenth of a foot, approximately 30mm. This explains the appearance of discrete sampling in height of the sea level variation during this time.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jan-2016
We have changed the first line above, indicating that the MTL ends in 1958, not 1956 as was previously stated.  We have verified that the values in the database are those from Pub. Sci. 20, in which they were indicated as MTL.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 22-Jan-2016
A value of MTL-MSL=31 mm has been applied to the RLR data for the period 1931-1958.  This value was derived from the average of three differences in the annual MSL and MTL listed in Pub. Sci. 24.  Note that no correction has been applied to the metric data.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 01-Nov-2018
Following a check on the new database several stations were reviewed. As a result both the RLR diagram and the RLR factor could have changed.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 05-Feb-2020
There is no data for Mumbai for 2012 to 2014 due to non-function of the tide gauge.