condition mean min max 0 h after light 1.756945 1.47838 2.03551 4 h after light 3.0305549999999997 3.00736 3.05375 8 h after light 12.23605 11.7809 12.6912 4 h after dark 8.232675 5.72005 10.7453 8 h after dark 4.001925 3.80898 4.19487 12 h after dark 1.77808 1.21967 2.33649