condition mean min max 4 h after light 1.6139495 0.772039 2.45586 8 h after light 1.79758 1.32273 2.27243 12 h after light 1.94803 1.66099 2.23507 4 h after dark 1.5426333333333333 1.33268 1.85015 8 h after dark 1.5829333333333333 1.29862 1.74002 12 h after dark 1.326692 0.995816 1.50876