condition mean min max 0 h after light 18.1732 18.0557 18.2907 4 h after light 11.49655 10.6479 12.3452 8 h after light 10.113900000000001 9.7497 10.4781 4 h after dark 13.136299999999999 12.4628 13.8098 8 h after dark 14.933250000000001 14.1128 15.7537 12 h after dark 16.70385 14.8033 18.6044