Harvest output isn't a fixed number. Each cycle a tree drops a quantity and takes a duration, and both are drawn from independent normal distributions centered on the listed averages β standard deviation 12.5% on each, clamped at Β±2Ο. Pick a tree below to see its ideal output distribution.
Each harvest rolls a value from the distribution above. The named tiers mark specific percentile cutoffs in the right tail of the $/hour distribution. Roll percentages reflect how often a single cycle lands at or beyond each threshold.
OP requires both rolls to hit their +2Ο extreme simultaneously (drop at maximum and duration at minimum). With a Β±2Ο clamp on independent normals, that joint event lands roughly once every 2,000 cycles.
$/hour combines two independent normal variables:
$/hour = drop Β· value Β· 3600 / duration. The division by
duration makes the resulting distribution right-skewed even though the
two inputs are symmetric.