Very reliable - Marina knows the PS system and can check how it works.

Generally Reliable - however it is not clear when it was written.

Marina is not an expect in Cyber Security so she is not a good choice to carry out an investigation into the incident at PS. It should therefore be considered unreliable.

This evidence can be relied upon as Marina has no reason to lie.

Reliable - Mlle Maubour has used suitable tools to produce a diagram which shows the range, detectable signal and the area in which login is possible.

Generally Reliable - Mlle Maubour has used tools to measure the WiFi - however different WiFi systems may be able to connect at different positions depending on the quality of equipment used.

Not reliable - it is not clear what tools have been used to measure the signal strength.

Not Reliable - It is not clear what skills Mlle Maubour has in order to take this diagram - all we know is she is a PhD student living in Lille.

Reliable - as this diagram has been supplied by the network manager then it will be the latest diagram showing all the hardware used at the Eighties hotel

Generally reliable - it is not clear when this diagram was produced as no dates have been included. It would also be useful to include dates showing when it was last updated.

Not reliable - the diagram may be out of date.

Not reliable - not all the devices are shown on the diagram - e.g. Firewalls.