condition mean min max 3 h after light 4.9419 4.42149 5.96288 6 h after light 5.940873333333333 3.9295 7.11219 9 h after light 7.76019 6.60133 8.84236 12 h after light 8.7146975 7.06563 9.8237 3 h after dark 8.576293333333334 8.02372 9.06144 6 h after dark 9.193446666666667 7.67697 11.5877 9 h after dark 7.063266666666666 6.16511 7.53257 12 h after dark 6.366235 6.29755 6.43492