How to determine number of allowable wires in a crimp wire connector?
From the table it looks like the MINIMUM number of 22 AWG wires is 5 with a maximum of 15.

I think the '-' is to be interpreted as 'to'.  So '4-14' means 4 wires up to 14 wires. (Notice that in the case of 22AWG all the combinations add up to values between 5 (minimum) and 15 which is the maximum allowed for 22AWG).

In the case of wires larger than 12 AWG you can only add one extra wire so there is no hyphen.