Counter for List in Python

Question

I have a list like this.

listt =[[\' 2020-06-12  00:00:00+03:00 \',\' 91.5\',\'91.9\',\'91.9\',\'91.9\',\'92.55\',\'92.55\',\'92.1\',\'93.3\',\'93.3 \'],