Interesting. I thought more were on 7/7. I understand 10% are on CC52 but didn't think that many wanted to work more than 7/7.

Basically pretty much everyone that wants it is entitled to 7/7, correct?

The 72 day schedule is 18 days a month which comes out to sightly better than 6/4 on average according to my maths.

The 76 day schedule would allow 6/3 more frequently, but not continuously. Who would want to work that much, though? Is it popular?