Glacier National Park, Montana

1500 Slide Spectrum Series (1985 - 1995)

Cumulative Frequency Summary

Spectrum Sequence #	Representative Visibility Condition Summary			Representative Cumulative Frequency of Reconstructed Extinction IMPROVE Aerosol Data (1988 - 1998)
	dv	bext (Mm^-1)	VR (km)
1 of 12	8	23	170	5%
2 of 12	10	28	140	15%
3 of 12	12	33	120	30%
4 of 12	13	36	110	35%
5 of 12	14	39	100	45%
6 of 12	15	43	90	55%
7 of 12	16	49	80	70%
8 of 12	17	52	75	70%
9 of 12	19	65	60	90%
10 of 12	22	87	45	96%
11 of 12	28	156	25	> 99%
12 of 12	30	196	20	> 99%

Prepared by Air Resource Specialists, Inc.

for the IMPROVE Program

1998