Figure 9 shows how volume uncertainty varies as a function of number of measurements and values of thickness uncertainty.
To do so, we calculated Pearson's and Spearman's correlations between our mean ctr measurements and values from multistrain records of the MPD [15] across the common strains.
Results on erosion volume measurements and values on intramodality agreement of reading A and reading B (CT vs CT and MRI vs MRI) and intermodality (CT vs MRI) agreements are presented in Table 2.
Dust transport in the fine mode is substantial (Jones and Christopher 2007) and contributes to large-scale PM2.5 of approximately 20 50 μg/m in the Middle East. Figure 4 also shows locations of ground-based measurements and values outside North America that were used for comparison.
A large fraction of these CO measurements were below the detection limit (23 of 35 (66%) of above ground measurements and 4200 (45%) of 9331 underground measurements), and values were imputed (assigned) by NIOSH/NCI to these samples using a statistical methodology.
