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 0.0 0.0 0.0 4 h after dark 0.200844 0.0 0.602532 8 h after dark 0.08783766666666666 0.0 0.263513 12 h after dark 0.044361333333333336 0.0 0.133084