condition mean min max 0 h after light 0.597745 0.0 1.19549 2 h after light 0.55624 0.0 1.11248 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.621515 0.0 1.24303 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0