condition mean min max 2 h after light 18.795506666666668 7.08064 37.445 6 h after light 8.499211816666667 0.0 21.0954 10 h after light 11.48565 3.03432 21.5828 14 h after light 10.180726994 9.64e-07 45.8083 18 h after light 12.496362833333334 0.214667 23.2302 2 h after dark 16.868099728333334 0.00937837 32.8364