condition mean min max 4 h after light 2.396119 0.952498 3.83974 8 h after light 3.9026 1.55548 6.24972 12 h after light 0.0 0.0 0.0 4 h after dark 1.257343 0.830226 1.68446 8 h after dark 2.0655945 0.832099 3.29909 12 h after dark 2.39286 0.68972 4.096