condition mean min max 4 h after light 12.79725 10.7614 14.8331 8 h after light 14.31515 14.1098 14.5205 12 h after light 15.72825 14.6479 16.8086 4 h after dark 16.2575 15.8921 16.6072 8 h after dark 18.997066666666665 18.3136 19.9167 12 h after dark 14.929533333333334 14.4778 15.7062