condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.00819725 0.0 0.0163945 4 h after dark 0.0072896 0.0 0.0218688 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0