Sub-locations

Name Sites Samples
Apache County 31 124
Cochise County 11 59
Coconino County 29 197
Gila County 2 2
Graham County 12 112
La Paz County 5 12
Maricopa County 42 341
Mohave County 5 118
Navajo County 84 455
Pima County 82 810
Pinal County 1 0
Santa Cruz County 23 227
Yavapai County 19 19
Yuma County 29 72