Presumably these are from records collected on a specific date in 2007, so they can't go back and see other calls that were made by the phones prior to this, or perhaps even since. IE they collected only calls made from PDL area on the 3rd May.
Would that be right ?
Just three days of records were collected, from the masts covering a certain location;
The telephone operators TMN, Vodaphone and Optimus be asked for the preservation and conservation in digital format (CD or DVD) of all the information relating to MOBILE PHONE TRAFFIC, including roaming calls, with an indication of the mobile phone numbers, date and time of the telephone conversations that took place on 2, 3 and 4th May 2007 with respect to the mobile phones that cover the following geographical locations:
Apartment:
N - 37,088863 // N37º 5' 19,91"
W - 8,730775...// W 8º 43' 50,79"
Tapas Restaurant
N - 37,088378 // N37º 5' 18,16"
W - 8,730979...// W 8º 43' 51,52"
https://www.mccannpjfiles.co.uk/PJ/MOBILE_PHONE_ANALYSIS.htm