condition mean min max 2 h after light 1.3753723333333334 0.724024 2.092 6 h after light 1.247408 0.872588 1.54905 10 h after light 0.9570428333333334 0.0 1.64489 14 h after light 1.8978331666666666 0.429079 3.02885 18 h after light 2.47394 1.99575 3.06278 2 h after dark 3.345658333333333 1.77218 7.59241