why the results of a point sensor with the result of data a long a line is different?

[Saya]

Hello,

to have the temperature in different points in a plane wave simulation, once I used a point sensor and once I just drew (not used in the simulation) a line passing through that point. The temperature of a point using the line is very different (about 10 times smaller) from the value of point sensor at that point. What's the reason?

Thanks.