condition mean min max 4 h after light 10.08103 9.069216 11.092844 8 h after light 8.64385 8.001169 9.286531 12 h after light 8.6942015 8.305583 9.08282 4 h after dark 9.9644715 9.286531 10.642412 8 h after dark 9.7227975 9.286531 10.159064 12 h after dark 10.524632 10.524632 10.524632