Comment by theK

Caution is advised here. Teas can vary wildly from producer to producer, fixing methods and even from year to year and the extraction vessels, brewing methods and even the water heating and temp measuring methods play a significant role.

Anecdotal evidence: The temps for my daily drinker (a deep steamed sencha) this year are 10°C lower (57) than last year. This is after keeping everything else constant.