She doesn't say, but it will be comparable to that in the middle ages:
Interesting and thanks for the link. From the wikipedia entry it seems the brunt of the little ice age was felt north of 50 degrees parallel and lasted a few 100 years. Iceland was really ice, Greenland was never green, the rivers of Britain and Netherlands froze. But only in the winters. Britain used to have a holiday celebrating the frost on the Thames river until it was dredged so it flows too fast to freeze.