condition mean min max 0 h after light 1.205525 1.09487 1.31618 4 h after light 1.416564 0.818098 2.01503 8 h after light 2.0491099999999998 1.93181 2.16641 4 h after dark 2.11957 1.79216 2.44698 8 h after dark 1.877855 1.65341 2.1023 12 h after dark 1.367505 1.16629 1.56872