Huge difference in C1C, C1L, and C2L

Hey, I was simulationg a fixed reciever on Skydel and I converted the logs file to RINEX using skydel tools to further analyze the data. I observed that there was huge difference between pseudorange observable from different channes. I don’t think this is normal and I check with the observation file from the IGS station. They have at max a difference of 1m. However, I am getting an unsually high difference. Moreover, can you explain how the channels affects the measurements?
Here is the difference I am observing:

Diff