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 0.0087203 0.0 0.0261609 4 h after dark 0.0 0.0 0.0 8 h after dark 0.1316821 0.0 0.354184 12 h after dark 0.004093133333333333 0.0 0.0122794