condition mean min max 4 h after light 9.70539 9.55965 9.81755 8 h after light 9.993186666666666 9.807260000000001 10.12997 12 h after light 9.910536666666667 9.695219999999999 10.129380000000001 4 h after dark 9.76061 9.32499 10.063089999999999 8 h after dark 9.67934 9.2647 9.90334 12 h after dark 9.554306666666667 9.198960000000001 9.75737