condition mean min max 4 h after light 17.443103333333333 15.35346 20.280839999999998 8 h after light 11.564344 9.229562 14.97269 12 h after light 13.883266666666668 12.017719999999999 16.78377 16 h after light 21.98232 13.74893 31.83708 4 h after dark 30.87483333333333 28.950309999999998 34.32441 8 h after dark 18.08191 15.878110000000001 20.956670000000003