condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.14940025 0.07818 0.27387 3 h after dark 0.202508 0.0 0.506803 6 h after dark 0.25000466666666665 0.200718 0.288246 9 h after dark 0.23279033333333335 0.0 0.550381 12 h after dark 0.0 0.0 0.0