Extremely large PGA values for processed ground motions

[jcy-go]

Describe the bug
Extremely large PGA values (e.g., 10^10 g) are observed from some ground motions.

To Reproduce
I got more than 600 ground motions with PGArotD50 larger than 10g from network AM, YG, YH and ZY. Examples are provided below.

1. network ZY, event ID ci14745580, station ID ZY.OCBC.HH; to reproduce, the configuration file is here.
2. network YH, event ID nc21438324, station ID YH.LEEP.EH; to reproduce, the configuration file is here.
3. network YG, event ID, nc21266207 station ID YG.MCL.HH; to reproduce, the configuration file is here.
4. network AM, event ID, ci38457511 station ID AM.R286C.EH; to reproduce, the configuration file is here.

Environmnet:

• OS: macOS Catalina v10.15.7
• Python Version 3.8.10
• Libcomcat Version 2.0.13
• Numpy Version 1.21.2

[emthompson-usgs]

Thank you for reporting this issue, which is very concerning. Since the problem seems to be confined to a few (somewhat obscure) networks, as a short term measure, I'm going to add these networks to the "exclude_networks" list since it may take some time to find a proper solution.