condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.96454 0.0 1.92908 4 h after light 0.97831 0.0 1.95662 8 h after light 1.988695 0.0 3.97739 12 h after light 0.967025 0.0 1.93405 2 h after dark 0.0 0.0 0.0 4 h after dark 2.881225 0.0 5.76245 8 h after dark 1.566545 0.0 3.13309 12 h after dark 0.0 0.0 0.0