Some may find this data useful.  Waited 83.5 days, plus or minus 0.2 days for 4 nearly equal blocks totalling 84332.729317 TEK.  I unlocked at 0.00011786 PoS difficulty.  I wound up with 166304.8897 TEK.  My simple slope-based formula between 35% and 40% told me my return should be 36.79% but I got equivalent of 34.92% (extrapolated from 30 days to 83.5 days).  That's pretty close to what I predicted, except I was hoping it would be compounded and not just extrapolated.  Still, much better than I would have got compounding the low returns available lately.  Can't complain.
Is there somewhere I can find good docs on the use of the console commands?