condition mean min max 0 h after light 6.073235 5.31941 6.82706 4 h after light 4.188505 3.7395 4.63751 8 h after light 0.3752405 0.0 0.750481 4 h after dark 4.106355 3.72502 4.48769 8 h after dark 13.127600000000001 12.8076 13.4476 12 h after dark 8.99976 8.15146 9.84806