775_Galveston, Pier 21_United States of America (the)
Datum	Value	Description
Status	14-Nov-2022	Processing Date
Epoch	01-Jan-1983 to 31-Dec-2001	Tidal Datum Analysis Period
MHHW	5.68	Mean Higher-High Water (ft)
MHW	5.55	Mean High Water (ft)
MTL	5.25	Mean Tide Level (ft)
MSL	5.11	Mean Sea Level (ft)
DTL	5.10	Mean Diurnal Tide Level (ft)
MLW	4.94	Mean Low Water (ft)
MLLW	4.53	Mean Lower-Low Water (ft)
STND	0.00	Station Datum (ft)
GT	1.15	Great Diurnal Range (ft)
MN	0.61	Mean Range of Tide (ft)
DHQ	0.13	Mean Diurnal High Water Inequality (ft)
DLQ	0.41	Mean Diurnal Low Water Inequality (ft)
HWI	Unavailable	Greenwich High Water Interval (in hours)
LWI	Unavailable	Greenwich Low Water Interval (in hours)
Maximum	13.75	Highest Observed Water Level (ft)
Max Date & Time	13-Sep-2008 01	Highest Observed Water Level Date and Hour (LST)
Minimum	-2.05	Lowest Observed Water Level (ft)
Min Date & Time	11-Jan-1908 10	Lowest Observed Water Level Date and Hour (LST)
HAT	6.34	Highest Astronomical Tide (ft)
HAT Date & Time	17-Oct-1989 01	HAT Date and Hour (LST)
LAT	3.16	Lowest Astronomical Tide (ft)
LAT Date & Time	18-Jan-1988 15	LAT Date and Hour (LST)
LEV	Unavailable	Switch 1 (ft)
LEVB	Unavailable	Switch 2 (ft)