I've seen data from leadership at two different companies, each doing B2B SaaS. It was a mix of cell phone numbers and organization numbers. They were going off 60 dials per day as well. Both circumstances came back at a 13% connect rate...this means they actually spoke to a human. Doesn't includes Voicemails, no connect, etc. Actually speaking to a human. Plus my own personal experience as an IC, I would say that was about right.