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 0.162532 0.126743 0.221245 12 h after light 0.127916 0.0 0.383748 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.054720333333333336 0.0 0.164161 12 h after dark 0.0 0.0 0.0