condition mean min max 0 h after light 157.6935 152.552 162.835 4 h after light 74.59405 47.1121 102.076 8 h after light 54.26695 50.4681 58.0658 4 h after dark 96.68690000000001 96.1357 97.2381 8 h after dark 105.45495 94.8379 116.072 12 h after dark 122.148 107.277 137.019