condition mean min max 3 h after light 7.8678099999999995 1.96456 22.267 7 h after light 9.156901666666666 2.80117 20.3183 11 h after light 8.710189166666666 3.38993 15.4581 2 h after dark 9.132895833333333 3.85599 14.1357 6 h after dark 6.272658333333333 2.02346 11.322 10 h after dark 5.6387325 1.20218 11.2473