condition mean min max 4 h after light 8.35035 6.77756 9.92314 8 h after light 9.340015000000001 8.84144 9.83859 12 h after light 12.147 11.6308 12.6632 4 h after dark 16.0701 15.0022 16.6711 8 h after dark 16.83203333333333 16.1326 17.7675 12 h after dark 12.5763 11.8562 13.1252