condition mean min max 4 h after light 10.118456 9.012714 11.224198 8 h after light 10.0566665 8.961892 11.151441 12 h after light 8.416418499999999 8.368223 8.464614 4 h after dark 8.9794475 8.853834 9.105061 8 h after dark 8.020142 7.860996 8.179288 12 h after dark 8.961892 8.961892 8.961892