Distance range

Boulder field (m)

Ratio of dust on leaves

From the Misery Haul Road

From a rarely used end road outside the Misery Camp

10

8.8 ± 2.2

1.3 ± 0.4

>10 - 100

6.1 ± 2.3

1.0 ± 0.4

>100 - 500

4.2 ± 1.9

1.4 ± 0.6

>500 - 1000

2.6 ± 0.9

1.3 ± 0.5

>1000 - 1500

1.1 ± 0.4

0.7 ± 0.4