condition mean min max 1 h after light 18.93330655 16.5278575 20.50801225 3 h after light 21.14369289 20.10527387 23.08956949 5 h after light 19.207222156666667 18.58117789 20.11117701 7 h after light 19.634855946666665 18.80086381 21.10683696 9 h after light 17.90103528666667 15.10609507 19.82670145 11 h after light 18.160788996666668 16.50206149 19.29604625 13 h after light 18.832633133333335 17.08209134 20.63947203 15 h after light 19.76825396 17.89892046 21.15801216 1 h after dark 20.56752253 18.8901313 22.93128075 3 h after dark 20.71217821666667 19.78226056 21.26046474 5 h after dark 19.634556776666667 18.68385988 21.37129672 7 h after dark 21.06529283 18.18375259 22.63062675