condition mean min max 4 h after light 2.1399333333333335 1.42771 2.69456 8 h after light 2.010143 0.779969 3.15245 12 h after light 1.62613 1.31322 1.89056 4 h after dark 2.5941899999999998 1.96157 3.51339 8 h after dark 2.7465466666666667 2.40599 3.33326 12 h after dark 3.23284 2.91774 3.56414