The 2.6 days comes from the chemical makeup of the fluid residue found in the trunk liner. It does not come from the air sample.
The 2.6 days also assumes a 35 degree Celsius average temperature. The temperature during that time period was lower. However, if Caylee was in the trunk the entire time, it may have been higher. After all the car was parked on asphalt...but it was mostly cloudy at that time...and the car was white...who knows???
My best guess is 3 days, not 2.6. So, conveniently, I have Casey killing little Caylee around 3PM on the 16th and removing her from the trunk of the Pontiac around 3PM on the 19th. In between, she could have been anywhere.
With the discovery of the body in a bag, with duct tape around the head and (rumor has it) around the bag as well, it appears KC had the body in her trunk more than 2.6 days. So a question comes up - when did KC put the body in the bag and where?
I have argued that little Caylee died around 3:00 PM on the 16, due to an accident while mom happily chatted and texted on the phone and simultaneously used mom and dad's desktop computer. We can argue about when and how on another thread. I will note, however, to those who think that Caylee was chloroformed and placed in KC's trunk prior to leaving for Tony's, that
this report will indicate that she probably would not survive more than an hour...putting death as late as 5:00PM (give or take).
Recall that the Body Farm report assumed Florida temperatures averaged 35C during the time in question when they came up with 2.6 days. I found a
weather underground station in Orland kind of / sort of in between the Anthony's and Tony's, which should provide a reasonable approximation of the temperatures KC's car would experience driving back and forth between those locations. On top of that, this station reported temperatures every 2 to 6 minutes.
I also found a
forensic report that, amazingly, discussed trunk temperatures in white automobiles. In parallel, Bond found an
experiment some guy did in measuring ambient air, interior, trunk, and glove compartment temperatures. The plots posted provided insight into how fast the trunk temperature would rise and fall as the air temperature warmed and cooled.
With Bond's exceptional help (he is the
Excel man) I was able to create the following plot. To keep things from getting cluttered, I plotted ambient air temperature in Farenheit and Accumulated Degree Days (ADD) in Celcius. Our spreadsheet based ADD, however, on trunk temperature, not ambient temperature. Trunk temperature was higher. I thought it instructive to show ambient air temperature to give a sense of what the actual weather was like.
From this plot we can see that by assuming a 3:00 PM June 16 death the leaking decompostional fluid stops around 3:30 PM on June 19. Originally I believed this to mean that KC had discarded little Caylee at that time. However, the finding of remains in a garbage bag indicates to me that she was placed in the bag at that time.
Note that 3:30PM June 19 occurs during a period of cell phone inactivity just after pings from the Blanchard Park area are followed by a single ping near Dean and University, indicating a possible northward route (or return to Tony's).
I do not believe KC would have put the body in the bag at Tony's or a busy park like JBP. I imagine the job being messy, not fast, and suspicious (trash bag, duct tape, open trunk...). She did not travel to her parent's house that day either. So where did she do this?
