How many city-based franchises are featured in the competition of which the "2016–17 Cool & Cool Present Jazz National T20 Cup" was the thirteenth season?
2016–17 National T20 Cup The 2016–17 Cool & Cool Present Jazz National T20 Cup was a Twenty20 domestic cricket competition in Pakistan that took place in August and September 2016 with eight teams competing. It was the thirteenth season of the National Twenty20 Cup in Pakistan.
NatWest t20 Blast The NatWest T20 Blast is a professional Twenty 20 cricket league in England and Wales run by the ECB from 2014. The league consists of the 18 first-class county teams divided into two divisions of nine teams each. This setup, which was first announced in November 2013, replaced the Friends Life t20 competition as the main domestic Twenty20 competition in England and Wales.