condition mean min max 4 h after light 2.404125 2.19484 2.61341 8 h after light 2.861735 2.09582 3.62765 12 h after light 2.51124 1.9112 3.11128 4 h after dark 3.05974 2.96131 3.15817 8 h after dark 2.8985149999999997 2.79099 3.00604 12 h after dark 3.3633100000000002 3.28019 3.44643