When Kuchera is 6-10", 6-10" it is (assuming output is right to begin with), and warm ground, marginal airmass, sun angle, etc. (just as always is outside of the pavement in Times Square) is overrated.
As long as ground temps are 33/34F or less, I think we are close to 10/9:1 with very heavy rates, favorable growth, and 850 temps of between -3 and -6F.