Just for clarifications sake (even though it is obvious), the area with the lower temp would be the one not getting enough contact and the area with the higher temp means it's getting too much contact, all equal temps or close to it would mean you have correct camber and (in general) tyre pressure. Correct tyre pressure can be determined by averaging the 3 temperature readings which should equal the temperature reading on the centre of the tyre. If the average of all 3 is lower than the centre temp then it would mean there's too much pressure, if the average of all 3 is higher than the centre temp the it means there's not enough pressure.
Bookmarks