condition mean min max 4 h after light 11.467766666666666 11.3396 11.6206 8 h after light 11.524363333333334 11.430010000000001 11.67755 12 h after light 11.489116666666666 11.29394 11.71652 4 h after dark 11.54758 11.381110000000001 11.83608 8 h after dark 11.482610000000001 11.2688 11.76167 12 h after dark 11.19557 10.960280000000001 11.40517