1/2 on 1/1/18 as GM. Cleared @ window into F for MKE-SLC and into C+ for SLC-PHX. Was 10 of 10 for 2 on SLC-PHX. PHX is a hard upgrade to get I have found since being here. Most of my trips I have paid for F...but looking at the lists they can be quite long in and out of PHX. Delta does very well with selling the F and C+ cabin in this market. There are many flights that have the C+ cabin sold out before the upgrade windows open with only 2-3 F seats available.