condition mean min max 4 h after light 6.7572426666666665 5.1500010000000005 8.68949 8 h after light 10.392894333333333 7.258513000000001 13.654739999999999 12 h after light 7.282558333333333 5.170751 9.627382 16 h after light 8.861757 4.509678 13.47184 4 h after dark 17.160066666666665 16.78641 17.44196 8 h after dark 10.391465666666667 7.760616000000001 13.86237