condition mean min max 4 h after light 8139.505 6804.686667 9567.105 8 h after light 6859.197222 6344.273333 7479.595 12 h after light 4630.836667 3834.546667 5188.156667 1.5 h after dark 4036.860000333333 3757.346667 4261.976667 5.5 h after dark 5472.868889 4867.326667 5877.346667 9.5 h after dark 8009.446666666667 6251.286667 9296.73