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7.4 TABLE 1 DAILY UPPER AIR SOUNDING AND SEEDING ANALYSES
MIXING RATIO BASE BASE BASE BASE BASE
SDNG PTNIL STABILITY OBSERVATION SEEDING OPERATION DECL/CRIT INDICES Rain over mountainous YES: POOR -16 -1.0 20.24 SI and target area 5/13 A/C. 1 -4.1 18.44 LI Amphurs (Super cooled FLTS. 4 36.4 19.99 KI used) chemicals 1,3,4,6,19 CHEM - SWT.I - Rain over mountainous YES: POOR 0 -3.5 20.70 SI and target area 5/13 A/C. 1 -4.7 19.84 LI Amphurs (Super cooled FLTS. 4 38.0 20.69 KI used) chemicals T-1,3,4,19 CHEM 243.6 SWT.I - Thurnder storm rain over YES: POOR 0 -1.7 16.12 SI mountainous and target area

SUB CLD 100 MB CLD SUB CLD 100 MB CLD SUB CLD 100 MB CLD SUB CLD 100 MB CLD SUB CLD 100 MB CLD

CONVECTION - - CCL 5,397.3 50 MB - 9:30 - CCL 3,027.3 50 MB - 9:51 - CCL 4,933.1 50 MB - - - CCL 6,323.2 50 MB - 13:24 - CCL 3,616.3 50 MB -

TCT LCL LFC TCT LCL LFC TCT LCL LFC TCT LCL LFC TCT LCL LFC

RH 87.4 82.4 70.0 7.0 88.9 74.9 64.2 60.5 83.6 90.3 80.3 70.0 76.9 72.4 87.7 89.8 86.1 71.2 69.0 55.0

AVERAGE
WIND 233.4 209.4 - - 158.4 144.6 213.4 155.0 237.4 208.5 224.0 - 243.9 279.3 325.0 - 196.2 215.1 210.1 195.0

LAYER 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000

DATE 21 MAY 1998 22 MAY 1998 23 MAY 1998 24 MAY 1998 25 MAY 1998