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<br />e <br /> <br />e <br /> <br />e <br /> <br />. <br /> <br />Table 5.1. - Definition of Primary Response Variables <br /> <br />Response <br />variable Instrument <br /> <br />Time after <br />seeding <br />(minutes) <br /> <br />Units <br /> <br />Description <br /> <br />A2DC6 <br /> <br />A2DPlO <br /> <br />AIWC18 <br /> <br />R15A15 <br /> <br />R20A30 <br /> <br />PPFLOW <br /> <br />PTFLW <br /> <br />Airborne 2-DC <br />PMS probe 11 <br /> <br />Airborne 2-DP <br />PMS probe 11 <br /> <br />Airborne 2-DP <br />PMS probe 11 <br /> <br />Sheridan 5-cm <br />Radar <br /> <br />Sheridan 5-cm <br />Radar <br /> <br />All gages <br />within EPS <br />(evaluation <br />precipita- <br />tion swath) <br /> <br />All gages <br />within EPS <br /> <br />6 <br /> <br />10 <br /> <br />18 <br /> <br />15 <br /> <br />30 <br /> <br />20-60 <br /> <br />20-60 <br /> <br />Particles L-l Average ice crystal concentration within the computed averaging window 2/ <br />in the 4 km distance centered on the pointer in the treated cell 6-minutes <br />after treatment. Observation made at -8 oC. <br /> <br />Particles L-l Average ice crystal concentration computed within the averaging window 2/ <br />centered on the pointer 10 minutes after treatment. Variable calculatea <br />using 2D precipitation probe after artifact rejection. The measurement <br />is made at the -11 oc level. <br /> <br />g/m3 Average ice water content computed within the averaging window 2/ centered <br />on the pointer 18-minutes after treatment in cells at the -8 oC-level. A <br />density of 0.1 g/cm3 and spherical shapes are assumed. <br /> <br />Dimensionless Average percent coverage of reflectivity exceeding 15 dBZ in a rectangular <br />"box" centered 15 minutes downwind of seeding line. <br /> <br />Dimensionless Average percent coverage of reflectivity exceeding 20 dBZ in a rectangular <br />"box" centered 30 minutes downwind of seeding line. <br /> <br />Dimensionless Percent of gages within the EPS receiving measurable precipitation during <br />the expected period of effect. <br /> <br />ITITl <br /> <br />Average precipitation accumulation in EPS. <br /> <br />1/ See updated Appendix F for details. <br />2/ w = 2000 m + 200 m/s · t; w = width of averaging window, t = time after treatment in seconds. <br />