Particle-size results for the WY13 ALM from all CODOS sites

Table 1. Particle-size results for the WY13 ALM from all CODOS sites. Particulate matter (PM) values represent percentages under the specified grain size (e.g. 9.53% of the WY13 ALM samples from the northeastern sites is composed of particles 2.5 micrometers and smaller). The results illustrate the similarities among the northeastern and southwestern sites and the coarser particles sizes found in the ALM samples from Wolf Creek, Spring Creek, and Park Cone.