condition mean min max 0 h after light 14.0582 13.7947 14.3217 2 h after light 8.595995 8.30622 8.88577 4 h after light 6.956125 6.89299 7.01926 8 h after light 10.67407 5.83834 15.5098 12 h after light 12.1052 11.7343 12.4761 2 h after dark 13.86025 11.8121 15.9084 4 h after dark 16.7352 13.9097 19.5607 8 h after dark 19.40205 16.7608 22.0433 12 h after dark 14.562 12.8738 16.2502