condition mean min max 4 h after light 4.770429 3.3369199999999997 6.830589 8 h after light 8.942607666666667 6.042308 11.67868 12 h after light 6.497774333333333 4.914757 9.527393 16 h after light 8.277401666666666 6.4903129999999996 9.65973 4 h after dark 6.029420666666667 4.239969 7.760434 8 h after dark 3.755389 1.961171 5.523744000000001