condition mean min max 0 h after light 2.909745 2.71303 3.10646 4 h after light 0.7605139999999999 0.628266 0.892762 8 h after light 0.5990025 0.567572 0.630433 4 h after dark 1.8419400000000001 1.80638 1.8775 8 h after dark 2.165915 2.05684 2.27499 12 h after dark 2.0526 1.40064 2.70456