condition mean min max 4 h after light 815.5299365 775.274013 855.78586 8 h after light 839.4458035 783.671175 895.220432 12 h after light 849.0652155 845.821451 852.30898 4 h after dark 717.762839 682.098548 753.42713 8 h after dark 957.2964079999999 786.945384 1127.647432 12 h after dark 912.427669 912.427669 912.427669