condition mean min max 4 h after light 3.3887009999999997 3.2249689999999998 3.5668519999999995 8 h after light 2.340981 1.621515 2.704152 12 h after light 1.5678216666666667 1.37499 1.718733 16 h after light 3.2219836666666666 2.688304 3.80249 4 h after dark 2.699955 2.424242 3.151442 8 h after dark 1.6837523333333333 1.650363 1.7229919999999999