That's probably changes in Celsius with 0, I believe, to be the coldest point between the Pleistocene Glacial Period and our current Holocene Glacial Period (which probably reached epoch about 6,000 years ago).
34 posted on 03/21/2023 10:14:17 AM PDT by Tell It Right
(1st Thessalonians 5:21 -- Put everything to the test, hold fast to that which is true.)