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	1.731	Mean Higher-High Water (m)
MHW	1.691	Mean High Water (m)
MTL	1.599	Mean Tide Level (m)
MSL	1.558	Mean Sea Level (m)
DTL	1.556	Mean Diurnal Tide Level (m)
MLW	1.507	Mean Low Water (m)
MLLW	1.381	Mean Lower-Low Water (m)
STND	0.000	Station Datum (m)
GT	0.351	Great Diurnal Range (m)
MN	0.185	Mean Range of Tide (m)
DHQ	0.040	Mean Diurnal High Water Inequality (m)
DLQ	0.126	Mean Diurnal Low Water Inequality (m)
HWI	Unavailable	Greenwich High Water Interval (in hours)
LWI	Unavailable	Greenwich Low Water Interval (in hours)
Maximum	4.190	Highest Observed Water Level (m)
Max Date & Time	13-Sep-2008 01	Highest Observed Water Level Date and Hour (LST)
Minimum	-0.624	Lowest Observed Water Level (m)
Min Date & Time	11-Jan-1908 10	Lowest Observed Water Level Date and Hour (LST)
HAT	1.934	Highest Astronomical Tide (m)
HAT Date & Time	17-Oct-1989 01	HAT Date and Hour (LST)
LAT	0.962	Lowest Astronomical Tide (m)
LAT Date & Time	18-Jan-1988 15	LAT Date and Hour (LST)
LEV	Unavailable	Switch 1 (m)
LEVB	Unavailable	Switch 2 (m)