Table 6. Summary of the Values of mu(NP/NO) for Each Flight, Divided Into Categories Determined From DACAD Size Distributionsa s, % dact, nm Flight mu(NP/NO) Background Polluted Smoke 2.8 15 6 1.19 1.35 NE 2.8 15 7 1.33 NE NE 2.8 15 8 1.18 NE NE 2.8 15 10 1.34 NE NE 3.6 13 9 1.21 1.26 NE 2.1 18 12 1.36 1.89 NE 2.1 18 13 1.28 1.85 NE 2.1 18 14 1.70 2.41 2.28 2.1 18 15 1.54 2.73 1.61 2.1 18 16 2.30 6.83 NE 2.1 18 17 2.30 3.75 NE a"NE" indicates that the condition was "not encountered" during the DACAD scan times used in the closure analysis.