condition mean min max 4 h after light 1.3507145 0.846759 1.85467 8 h after light 1.98922 1.7147 2.26374 12 h after light 0.9845305 0.926521 1.04254 4 h after dark 0.8716233333333333 0.617949 1.26112 8 h after dark 1.33274 1.01834 1.96143 12 h after dark 1.2603456666666666 0.898027 1.51178