Mesa Verde National Park, Colorado

1500 Slide Spectrum Series (1986 - 1995)

Cumulative Frequency Summary

Spectrum Sequence #	Representative Visibility Condition Summary			Representative Cumulative Frequency of Reconstructed Extinction IMPROVE Aerosol Data (1988 - 1997)
	dv	bext (Mm^-1)	VR (km)
1 of 9	1	11	350	< 1%
2 of 9	2	12	320	< 1%
3 of 9	3	13	300	< 1%
4 of 9	4	16	250	3%
5 of 9	6	18	220	5%
6 of 9	7	20	200	20%
7 of 9	8	22	180	20%
8 of 9	13	36	110	90%
9 of 9	22	87	45	99%

Prepared by Air Resource Specialists, Inc.

for the IMPROVE Program

1998