How to read this estimate
Comparing a nearby value on the same standard schedule isolates the effect of the pay change without mixing in different working hours.
Compare nearby rates on an annual basis to see whether a small hourly increase materially changes the overall offer.
The neighboring-rate table holds 40 hours and 52 weeks constant, so its difference comes only from the wage. The 34-hour example answers a different question: what happens when the schedule changes? Keeping those comparisons separate prevents a higher hourly rate from being mistaken for higher total compensation when fewer hours are available.