condition mean min max 1 h after light 18.80417869 17.27273191 20.33562547 3 h after light 12.365664129666666 7.956522839 15.52793777 5 h after light 15.757811926666667 15.57795973 16.05704459 7 h after light 16.49963418666667 13.17997291 18.50785767 9 h after light 17.36186784 15.72376406 18.91443622 11 h after light 18.190805366666666 17.56543323 18.79599075 13 h after light 16.54448031 14.29531338 17.76483425 15 h after light 17.135200440000002 15.73542342 17.83837919 1 h after dark 19.412529223333333 18.24080755 20.01426333 3 h after dark 19.43050533 17.707691399999998 20.56071038 5 h after dark 16.364498976666667 14.73261522 18.40207403 7 h after dark 16.58076747 14.27267822 19.58441144