"Uncollected Systems" on Shuttle Analysis Report

[Lugh]

Greetings!
During my solo game, I was trying to fine tune my PV shuttle routes by using the "Shuttle Analysis" report available on the Galac-Tac Game Assistant (see below)

GTac
--Reports
----Empire Status Reports
------Shuttle Analysis

Uncollected systems:                                                           
00-39 (27) 09-23 @16                                                           
05-42 (30) 09-23 @19                                                           
09-25 (15) 09-23 @ 2                                                           
91-15 (24) 09-23 @18                                                           
95-10 (24) 09-23 @14                                                           
96-17 (15) 09-23 @13


Locations in BOLD are still being colonized as of my most recent turn.  Why are they on this list and what does the number following the "@" mean?
Thanks!