Sample Tide Prediction Accuracy Table

Station Name	Year	90% Distribution Level				Standard Deviation of Differences				Average Differences
Station Name	Year	High Water (Hour)	Low Water (Hour)	High Water (Feet)	Low Water (Feet)	High Water (Hour)	Low Water (Hour)	High Water (Feet)	Low Water (Feet)	High Water (Hour)	Low Water (Hour)	High Water (Feet)	Low Water (Feet)
Eastport, ME	1995	0.2	0.2	0.7	0.6	0.08	0.09	0.39	0.41	0.00	-0.01	0.19	-0.01
Portland, ME	1995	0.2	0.2	0.6	0.6	0.15	0.13	0.41	0.42	0.05	0.07	0.06	0.02
Boston, MA	1995	0.2	0.2	0.6	0.6	0.14	0.14	0.40	0.43	0.05	0.03	0.08	-0.01
Newport, RI	1995	0.3	0.7	0.6	0.7	0.24	0.46	0.42	0.44	0.00	0.05	0.05	-0.08
New London, CT	1995	0.5	0.4	0.6	0.6	0.36	0.33	0.44	0.43	-0.04	-0.01	-0.02	0.02
Bridgeport, CT	1995	0.2	0.3	0.8	0.8	0.14	0.18	0.60	0.53	-0.07	-0.12	0.06	-0.02
Willets Point, NY	1995	1.0	1.0	0.9	0.8	0.69	0.56	0.63	0.61	-0.09	-0.33	0.09	-0.03
The Battery, NY	1995	0.5	0.4	0.7	0.8	0.35	0.31	0.52	0.53	-0.07	-0.06	0.00	0.01
Albany, NY <1>	1986	1.0	0.8	>1.0	>1.0	0.40	0.52	0.91	1.16	0.62	0.00	-0.50	-0.17
Sandy Hook, NJ	1995	0.4	0.3	0.7	0.8	0.26	0.27	0.51	0.52	0.02	0.03	0.02	0.00
Philadelphia, PA	1989	0.5	0.6	1.0	1.0	0.30	0.36	0.72	0.65	0.14	0.11	-0.12	0.28
Reedy Point, DE	1995	0.3	0.5	0.9	0.9	0.23	0.26	0.61	0.61	0.05	-0.13	0.13	-0.09
Breakwater Harbor, DE	1995	0.3	0.3	0.8	0.9	0.23	0.22	0.52	0.55	-0.05	0.02	0.06	-0.04
Baltimore, MD <2>	1995	1.0	>1.0	0.9	0.9	0.57	0.83	0.58	0.58	0.29	-0.01	-0.04	0.04
Washington, D.C.	1995	0.6	0.6	1.0	0.9	0.35	0.40	0.64	0.59	-0.16	-0.19	-0.01	0.03
Hampton Roads, VA	1995	0.4	0.4	0.8	0.9	0.27	0.25	0.51	0.56	0.07	0.05	0.03	-0.01
Wilmington, NC	1995	0.5	0.4	0.5	0.7	0.36	0.27	0.32	0.46	-0.06	-0.08	0.08	0.04
Charleston, SC	1995	0.4	0.3	0.7	0.8	0.27	0.24	0.44	0.50	0.05	0.04	0.06	0.05
Savannah, GA <1>	1980	0.4	0.4	0.7	0.9	0.28	0.23	0.45	0.60	-0.02	-0.06	-0.09	-0.02
Savannah River Ent., GA	1995	0.3	0.3	0.7	0.9	0.21	0.19	0.47	0.58	-0.01	-0.07	0.05	0.03
Fernandina Beach, FL	1995	0.2	0.3	0.9	0.9	0.15	0.19	0.48	0.56	-0.02	0.06	0.33	0.30
Mayport, FL	1995	0.3	0.4	0.6	0.8	0.20	0.27	0.40	0.48	0.09	0.10	0.12	0.12
Miami Harbor Ent, FL <1>	1980	0.3	0.3	0.4	0.4	0.17	0.17	0.26	0.26	-0.04	-0.02	0.04	0.07
Key West, FL	1995	0.8	0.6	0.4	0.4	0.39	0.34	0.25	0.27	-0.30	-0.17	0.01	0.02
St. Petersburg, FL	1995	0.7	0.7	0.7	0.7	0.45	0.51	0.47	0.46	0.13	-0.03	-0.07	0.08
Pensacola, FL <2>	1995	>1.0	>1.0	0.6	0.9	2.61	2.72	0.48	0.41	0.04	0.10	-0.04	0.07
Mobile, AL <1><2>	1984	>1.0	>1.0	0.8	0.7	2.56	2.49	0.48	0.45	0.05	-0.09	-0.05	0.04
Galveston, TX <2>	1995	>1.0	>1.0	0.7	0.8	1.29	1.25	0.50	0.54	-0.15	-0.12	-0.03	0.00
Honolulu, HI	1995	0.6	0.5	0.3	0.3	0.39	0.37	0.21	0.20	0.01	0.03	-0.03	0.02
San Diego, CA	1995	0.4	0.3	0.3	0.3	0.17	0.17	0.17	0.18	0.20	0.16	0.06	-0.07
Los Angeles, CA	1995	0.3	0.3	0.2	0.2	0.23	0.22	0.17	0.18	0.04	0.02	-0.03	0.03
San Francisco, CA	1995	0.3	0.4	0.4	0.6	0.18	0.25	0.31	0.39	-0.12	-0.03	0.03	-0.02
Humboldt Bay, CA	1995	0.2	0.3	0.4	0.6	0.13	0.15	0.42	0.47	0.07	0.15	0.03	-0.02
Crescent City, CA	1995	0.2	0.2	0.6	0.6	0.12	0.12	0.41	0.44	0.04	0.05	0.01	0.01
Astoria, OR	1995	0.2	0.3	0.7	0.9	0.11	0.17	0.48	0.55	-0.02	0.04	-0.04	0.07
Aberdeen, WA <1>	1982	0.4	0.7	1.0	>1.0	0.26	0.31	0.58	0.76	0.04	0.34	-0.29	-0.10
Port Townsend, WA	1995	0.4	0.4	0.8	0.8	0.24	0.23	0.49	0.49	-0.01	0.09	0.05	0.05
Seattle, WA	1995	0.2	0.2	0.7	0.7	0.16	0.14	0.46	0.50	0.00	-0.02	0.03	-0.03
Ketchikan, AK	1995	0.1	0.1	0.8	0.7	0.08	0.08	0.48	0.47	0.02	0.01	-0.03	0.05
Sitka, AK	1995	0.1	0.1	0.7	0.7	0.09	0.09	0.45	0.44	0.01	0.01	0.04	-0.02
Juneau, AK	1995	0.1	0.1	0.8	0.8	0.10	0.11	0.50	0.49	0.01	0.00	0.16	-0.13
Cordova, AK	1995	0.2	0.2	0.8	0.8	0.15	0.14	0.52	0.51	0.06	0.03	-0.03	0.08
Valdez, AK	1995	0.2	0.2	0.8	0.8	0.14	0.11	0.52	0.52	0.02	-0.04	-0.07	0.07
Seldovia, AK	1995	0.1	0.1	0.8	0.9	0.08	0.09	0.52	0.56	-0.01	0.03	-0.04	0.07
Nikiski, AK <3>	1995	0.2	0.2	>1.0	>1.0	0.13	0.16	0.38	0.37	-0.07	-0.06	-1.47	-1.65
Anchorage, AK <3>	1995	0.2	0.2	>1.0	>1.0	0.12	0.12	0.70	0.78	0.08	0.02	0.06	0.20
Kodiak, AK	1983	0.2	0.2	0.9	0.9	0.16	0.15	0.55	0.55	0.01	0.04	-0.09	-0.23
Sweeper Cove, AK	1995	0.4	0.3	0.7	0.8	0.33	0.23	0.47	0.48	0.09	0.07	-0.02	0.04
Unalaska, AK	1995	0.4	0.4	0.8	0.8	0.30	0.22	0.47	0.47	0.12	0.13	-0.01	0.05

These stations are no longer active, no recent data is available to conduct analysis.
These stations have strong non-tidal influences normally caused by short-term meteorological events. Such areas are difficult to predict accurately.
These stations have tidal ranges in excess of 20 feet. Although differences between predictions and observations may be greater than 1 foot, this difference represents less than 5% of the total range of the station.