condition mean min max 4 h after light 91.8571 74.1242 109.59 8 h after light 62.84955 60.6079 65.0912 12 h after light 56.4782 49.8995 63.0569 4 h after dark 94.6053 91.8539 98.0658 8 h after dark 117.67566666666667 117.106 118.459 12 h after dark 125.92933333333333 118.948 135.827