040_Adak, Alaska_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	6.58	Mean Higher-High Water (ft)
MHW	6.30	Mean High Water (ft)
MTL	5.19	Mean Tide Level (ft)
MSL	5.09	Mean Sea Level (ft)
DTL	4.89	Mean Diurnal Tide Level (ft)
MLW	4.08	Mean Low Water (ft)
MLLW	3.19	Mean Lower-Low Water (ft)
STND	0.00	Station Datum (ft)
GT	3.39	Great Diurnal Range (ft)
MN	2.22	Mean Range of Tide (ft)
DHQ	0.28	Mean Diurnal High Water Inequality (ft)
DLQ	0.89	Mean Diurnal Low Water Inequality (ft)
HWI	Unavailable	Greenwich High Water Interval (in hours)
LWI	Unavailable	Greenwich Low Water Interval (in hours)
Maximum	9.70	Highest Observed Water Level (ft)
Max Date & Time	29-Dec-1966 00	Highest Observed Water Level Date and Hour (LST)
Minimum	-0.06	Lowest Observed Water Level (ft)
Min Date & Time	26-Nov-2003 10	Lowest Observed Water Level Date and Hour (LST)
HAT	8.64	Highest Astronomical Tide (ft)
HAT Date & Time	30-Dec-1986 22	HAT Date and Hour (LST)
LAT	0.91	Lowest Astronomical Tide (ft)
LAT Date & Time	22-Jun-1986 22	LAT Date and Hour (LST)
LEV	Unavailable	Switch 1 (ft)
LEVB	Unavailable	Switch 2 (ft)