condition mean min max 4 h after light 5.372317 2.819502 9.422991 8 h after light 2.2543113333333333 1.779611 2.513347 12 h after light 4.272140666666667 2.5499709999999998 6.382632 16 h after light 2.864853666666667 2.442047 3.3980300000000003 4 h after dark 4.133598666666667 2.125164 6.75282 8 h after dark 2.9680560000000002 2.67231 3.423629