I saw that guy too and he said that they could also pinpoint almost her exact locations as she traveled. Interesting.
It would be fun to see what this guy said. Anyone have the date of the NG?
IMHO, "almost her exact location" is a pretty hilarious oxymoron, eh?
Basically, when Casey's cell sent/received a transmission (except for calls that roll directly to vmail, for which the receiver location data is not retained) we get (a) the identity of the cell tower that carried the transmission, hence, the location of that tower, and (b) the identity of the directional antenna on that tower that carried the transmission. The directional antenna cover ~1/3 of a circle. The position of each directional antenna is known, hence, we can pin Casey's location down to being in a particular area as described by an arc of ~120degrees in the direction of the antenna.
There are plenty of variables we can't account for, such as cell towers shifting which one carries the call based on how much traffic they are carrying (e.g. during peak periods). In an urban area like Orlando the density of the towers is so high that Casey's transmissions from a single location (e.g. Tony's apt., G&C's house) can and are carried by up to 3 different towers triangulated around that location. Also, all cell towers aren't created equal...so, there are some rules-of-thumb one can use regarding the range from an individual tower a receiver may operate...however it isn't an exact science, and one only can speak of the range...not the exact location of the receiver within that range.
Sooo....the pings give us a huge amount of info from which we can increase/decrease the probability of different speculation being valid. But, it certainly isn't as precise as having the GPS coordinates on the phone itself. If having GPS coordinates is a laser point..what we have is a decent artist's brush.
FWIW, there are some indicators one can look for in the cell records that may suggest when Casey powered down her phone and powered it up again. One such indicator is when a system message (e.g. vmail waiting) appears when there was no record of an incoming transmission. One such instance of extremely high interest IMHO occurs on 6/19 @ 5:45PM after a 50minute period of inactivity is ended by and incoming system message and Casey pinged @ a different location than the prior ping @ 4:54PM. This period exactly encompasses the time calculated by the ADD forensics for the body having been bagged or tossed based on a 6:30-7PM 6/16 t.o.d. It is then followed by a 3hr period of cell inactivity during which Casey spontaneously appeared @ Chris S. house to hang for a few hours.
Based largely on the above, and, as posted in the 6/23 ping thread Casey's non-chalant returns to G&C's 6/20 & 6/23 w/o coast-is-clear calls, IMHO Casey bagged Caylee's body ~5PM 6/19. There are still some options for whether or not Casey stowed the body elsewhere or immediately disposed of it on Suburban Dr. that evening...that Casey drove Tony's Jeep to Chris' house throws a monkey wrench into things a bit.
FWIW...when the cell records first became available OCR'd and scrutinized, thanks to many WSs (TexasLil, Georgia PI, JWG, ElizaAvalon, Shadow of My Mind, Muzikman, Liltigress, etc., etc. leaving out plenty I'm sure) and some antenna validation work done on the ground there in Orlando (JWG & Breathelife21) - establishing Casey's sleep patterns and filtering down the records to look @ only the periods Casey was required to be using her phone were the first things done. This was all done prior to the body being discovered on Suburban which fueled the cause.
All in all it's just interesting that they'd take this much interest in the gaps of time the phone was NOT used.
