condition mean min max 0 h after light 1.748715 1.48793 2.0095 4 h after light 3.650315 3.27337 4.02726 8 h after light 1.1361935 0.889367 1.38302 4 h after dark 4.08537 3.34651 4.82423 8 h after dark 5.660075 5.59312 5.72703 12 h after dark 2.196415 1.83229 2.56054