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 0.0902155 0.0 0.180431 8 h after dark 0.02228265 0.0 0.0445653 12 h after dark 0.1616285 0.147759 0.175498