condition mean min max 4 h after light 1.6786185000000002 0.820397 2.53684 8 h after light 1.8154 1.55297 2.07783 12 h after light 3.0370150000000002 2.58082 3.49321 4 h after dark 2.75375 2.3169 3.09334 8 h after dark 2.7298333333333336 2.4666 3.03071 12 h after dark 2.026143333333333 1.37761 2.92943