Pretty sure there is some confusion afoot here. I think the part of the map being referred to can be seen in Btown's post #262, but was edited to include the 2 cameras not included on the original, which is no longer visible.
This isn't Btown's map, as I think VV believes from post #281.
A few additonal comments that I hope will get everyone on the same page:
-there is "Tenth & College Apartments" and "Tenth & College Village", the shorthand for these dwellings that comes up here can often times lead to confusion.
-Zoe Camp's apartment is marked on there even though it is unknown which of the 2 main doors it is near
-there is no camera that covers the stairwell near the clock on the SE corner of the T&C Apts.
-Lohud flash video says they knocked on ZC door, Lohud ZC article says they rang, the same author of the article is the person talking, I'd consider the method of how they tried to contact ZC unknown to the public from that difference. However, in the video, the PI does indicate one minute elapsed from entering T&C to the door opening and CR/LS emerging.
-Lohud flash video is edited poorly. Abbey helpfully transcribed the key parts of the path
here and I critiqued it here:
http://www.websleuths.com/forums/showpost.php?p=7997946&postcount=588. I believe that the sloppy way they patched together events at Tenth & College Apartments mistakenly make it sound like there were two occasions in which they were there.