condition mean min max 0 h after light 3.41954 3.30963 3.52945 4 h after light 5.627685 5.36836 5.88701 8 h after light 5.855945 5.71767 5.99422 4 h after dark 5.0607050000000005 5.00679 5.11462 8 h after dark 4.612065 4.31106 4.91307 12 h after dark 3.77104 3.46512 4.07696