condition mean min max 4 h after light 603.6921964999999 578.169505 629.214888 8 h after light 658.9649795 602.927871 715.002088 12 h after light 683.3271895 678.883861 687.770518 4 h after dark 615.6106085 484.82067 746.400547 8 h after dark 645.3238120000001 637.232057 653.415567 12 h after dark 649.514586 649.514586 649.514586