Big COHA logo
           
COHA Overview What's new on COHA COHA tour COHA site map Contact COHA staff
 
   Analysis by state
   Analysis by class I
   Analysis by region
   Descriptive maps
   Backtrajectories
   Trends analysis
   PMF Modeling
   Episode analysis
   Dust analysis
   Tribal analysis
   Fish & Wildlife
   Terms & acronyms
For best results,
please use:
Internet Explorer 5
(or higher)
Netscape 6
(or higher)
more info...
Trends Analysis for Ammonium Nitrate Light Extinction Coefficients (1/Mm) in 20% Worst Days

Note: Ý : Increase Trend ß : Decrease Trend  The size of the arrow is related to the slope (1/Mm/Year).

           Red: P Value <= 0.05   Yellow: 0.05 < P Value <= 0.1    Light Blue: 0.1 < P Value <= 0.2   Dark Blue: P Value > 0.2

 
Year   1994 1995 1996 1997 1998 1999 2000 2001 2002 2003   Slope (1/Mm/Year) P-Value
BADL1

Badlands National Park

3.385 3.565 7.440 6.129 14.517 8.413 3.923 7.103 5.343 7.861   0.254 0.146
BAND1 Bandelier National Monument 1.116 1.181 0.970 2.596 2.259 1.550 3.144 2.399 2.795 3.322   0.231 0.005
BRCA1 Bryce Canyon National Park 1.153 1.135 1.335 1.900 1.870 2.398 2.724 3.642 1.609 1.930   0.249 0.014
BRID1 Bridger Wilderness 0.715 0.704 1.226 1.203 1.259 1.141 1.424 1.651 1.998 1.072   0.112 0.036
CANY1 Canyonlands National Park 0.898 1.044 1.251 3.056 2.632 1.424 3.635 3.946 2.713 2.745   0.223 0.008
CHIR1 Chiricahua National Monument 0.869 0.878 1.011 0.823 0.814 1.454 1.273 0.977 2.001 1.708   0.093 0.036
DENA1 Denali National Park 0.323 0.323 0.342 0.561 0.519 1.092 1.196 0.792 0.849 0.523   0.066 0.014
GICL1 Gila Wilderness 0.635 0.645 0.839 0.785 0.677 0.663 1.278 0.667 1.143 1.304   0.064 0.023
GLAC1 Glacier National Park 1.924 1.888 3.114 5.654 3.868 3.258 10.166 9.065 8.628 10.391   0.963 0.002
GRBA1 Great Basin National Park 0.645 0.690 1.136 1.644 1.684 1.457 1.062 1.723 1.307 1.458   0.083 0.054
GRSA1 Great Sand Dunes National Monument 1.027 1.107 0.903 2.458 1.689 1.601 1.848 1.931 2.646 1.767   0.124 0.023
INGA1 Indian Gardens 1.118 1.185 1.141 1.736 1.226 1.396 3.736 2.398 2.457 2.581   0.170 0.001
JARB1 Jarbidge Wilderness 0.556 0.564 0.908 0.770 0.677 1.143 1.002 1.083 2.311 0.802   0.077 0.014
LAVO1 Lassen Volcanic National Park 1.090 1.164 1.717 1.772 2.161 4.042 3.370 4.755 3.901 3.785   0.356 0.001
MEVE1 Mesa Verde National Park 0.859 0.894 0.832 1.060 1.181 1.330 1.891 2.044 3.695 2.598   0.227 0.000
MORA1 Mount Rainier National Park 2.103 2.129 4.287 4.870 5.995 2.961 5.909 4.381 5.575 4.971   0.325 0.036
PEFO1 Petrified Forest National Park 1.054 0.978 1.161 1.573 1.213 1.606 2.218 1.544 2.340 1.868