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 0.0220196 0.0 0.0440392 4 h after dark 0.0 0.0 0.0 8 h after dark 0.010358933333333334 0.0 0.0310768 12 h after dark 0.0 0.0 0.0