condition mean min max 0 h after light 1.471085 1.08518 1.85699 4 h after light 2.049685 1.73446 2.36491 8 h after light 1.94252 1.83721 2.04783 4 h after dark 1.865555 1.82381 1.9073 8 h after dark 2.179535 1.84432 2.51475 12 h after dark 1.716715 1.46815 1.96528