15. Australian Day?
20% No Flying Day・・・rain, thunderstorm,windy
20% poor Condition・・・3-4,000ft blue thermal
40% Average Australian Day・・・5,000ft, blue,
ave.+2m/s
18% Good Australian Day・・・6-8000ft, ave+3m/s
2% “Austrarian Day”・・・10-12,000ft+ Cu, ave.4-
5m/s
長距離飛行への道→very chancy
15