condition mean min max 4 h after light 2.6417056666666667 2.544851 2.7668310000000003 8 h after light 2.2282683333333333 2.185724 2.307224 12 h after light 1.580807 1.294836 2.151259 16 h after light 2.993025333333333 2.316921 4.133841 4 h after dark 2.154726 1.9872779999999999 2.397199 8 h after dark 2.655144 1.4851729999999999 4.5115099999999995