condition mean min max 4 h after light 207.202 178.034 236.37 8 h after light 199.7775 182.668 216.887 12 h after light 216.4325 215.779 217.086 4 h after dark 265.711 263.09 269.492 8 h after dark 336.706 297.687 363.041 12 h after dark 243.773 222.19 256.03