condition mean min max 0 h after light 7.353225 5.22849 9.47796 4 h after light 6.227235 5.58113 6.87334 8 h after light 5.367145000000001 5.06885 5.66544 4 h after dark 6.2494250000000005 5.37957 7.11928 8 h after dark 7.877725 7.4183 8.33715 12 h after dark 9.710305 9.44837 9.97224