Table 5. Statistics of UVI forecasts and observations at 21 sites within the contiguous U.S. by instrument and latitude.

Site	Network	Period	No. rec	Mean UVI FCST	Mean UVI OBS	Mean CAF FCST	Mean CAF OBS	St. D. CAF FCST	St. D. CAF OBS	CAF Correl coeff.	UVI mean diff	UVI RMS diff	UVI STD diff
Atlanta	EPA	94165-94258	77	6.47	5.05	0.73	0.57	0.10	0.21	0.404	1.42	2.25	1.75
Boston	EPA	94165-94268	91	5.36	4.51	0.76	0.64	0.13	0.19	0.500	0.84	1.49	1.23
Raleigh	EPA	94180-94243	52	6.17	6.21	0.71	0.72	0.10	0.22	0.470	-0.05	1.67	1.67
Gaithersburg	EPA	94187-94268	73	5.48	4.47	0.75	0.61	0.13	0.20	0.625	1.02	1.57	1.19
Albuquerque	NOAA	94158-94243	84	8.92	10.00	0.89	1.00	0.05	0.09	0.242	-1.08	1.45	0.96
Bondville	NOAA	94158-94243	83	6.09	6.41	0.76	0.80	0.10	0.22	0.573	-0.32	1.49	1.46
Boulder	NOAA	94182-94243	60	7.66	6.58	0.85	0.73	0.06	0.23	0.425	1.08	2.26	1.99
Concord	NOAA	94182-94297	111	4.33	4.08	0.74	0.71	0.14	0.24	0.515	0.25	1.22	1.19
Detroit	NOAA	94182-94297	111	4.54	4.04	0.74	0.67	0.11	0.19	0.598	0.50	1.22	1.11
El Paso	NOAA	94182-94207	26	9.37	8.20	0.90	0.79	0.04	0.21	0.532	1.18	2.34	2.02
Minneapolis	NOAA	94182-94289	103	4.30	3.65	0.71	0.60	0.15	0.20	0.653	0.65	1.15	0.96
Seattle	NOAA	94182-94297	111	3.91	3.44	0.75	0.65	0.14	0.17	0.635	0.47	0.89	0.75
Davis	USDA	94181-94265	81	7.27	7.63	0.94	0.99	0.05	0.12	0.266	-0.36	0.70	0.68
Douglas Lake	USDA	94216-94265	46	3.87	4.25	0.72	0.80	0.13	0.30	0.812	-0.38	1.26	1.12
Geneva	USDA	94217-94265	47	4.53	4.66	0.76	0.79	0.13	0.28	0.506	-0.13	1.41	1.39
Griffin	USDA	94231-94265	34	5.98	6.09	0.76	0.77	0.12	0.20	0.462	-0.11	1.44	1.42
Pullman	USDA	94194-94265	69	5.43	6.31	0.87	1.01	0.07	0.16	0.543	-0.88	1.22	0.84
San Diego	Biosphere	94158-94247	76	8.21	7.56	0.89	0.82	0.06	0.17	0.493	0.65	1.61	1.47
San Diego	Scripps	94182-94250	67	7.94	7.79	0.87	0.86	0.12	0.21	0.303	0.25	1.91	1.89
Austin	Anderson	94182-94243	61	7.95	8.36	0.83	0.87	0.07	0.19	0.476	-0.42	1.60	1.57
Corpus Cristi	Anderson	94182-94243	61	7.71	8.17	0.79	0.84	0.06	0.13	0.350	-0.46	1.21	1.16
All 21 Stations	.	94158-94297	1524	6.03	5.82	0.79	0.76	0.13	0.24	0.621	0.22	1.55	1.51



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National Weather Service
Last Modified: November 03, 1997