condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.037467 0.0 0.112401 12 h after light 0.35716733333333334 0.105502 0.712036 4 h after dark 0.221604 0.0 0.486896 8 h after dark 0.598534 0.0 1.13221 12 h after dark 0.7148083333333334 0.167484 1.03818