condition mean min max 2 h after light 1.9240805 0.798693 2.50621 6 h after light 1.5937443333333334 0.91246 2.01865 10 h after light 2.001185 1.0397 2.81508 14 h after light 1.449831 0.593706 1.83473 18 h after light 1.539782 0.820542 2.21108 2 h after dark 1.9900111666666667 0.721697 2.6502