windsock.xml material 2.5kt frame /sim/time/sun-angle-rad 1.57 0.565 0.334 0.110 material 5kt /sim/time/sun-angle-rad 1.57 0.529 0.388 0.184 material 7.5kt /sim/time/sun-angle-rad 1.57 0.461 0.355 0.166 material 10kt /sim/time/sun-angle-rad 1.57 0.427 0.306 0.141 material 12.5kt /sim/time/sun-angle-rad 1.57 0.398 0.278 0.137 material 15kt /sim/time/sun-angle-rad 1.57 0.369 0.255 0.133