condition mean min max 0 h after light 1.75157 1.61343 1.88971 2 h after light 3.63987 3.32919 3.95055 4 h after light 2.7306 2.71461 2.74659 8 h after light 3.60225 2.71281 4.49169 12 h after light 7.73221 7.13363 8.33079 2 h after dark 6.568075 5.76938 7.36677 4 h after dark 5.461585 5.09862 5.82455 8 h after dark 3.77864 3.74606 3.81122 12 h after dark 2.108365 1.80849 2.40824