Recovering sp1k4 attenuator targets number to 5

[tongju12]

Description

Motivation and Context

How Has This Been Tested?

Where Has This Been Documented?

Pre-merge checklist

• Code works interactively
• Code contains descriptive docstrings, including context and API
• New/changed functions and methods are covered in the test suite where possible
• Test suite passes locally
• Test suite passes on GitHub Actions
• Ran docs/pre-release-notes.sh and created a pre-release documentation page
• Pre-release docs include context, functional descriptions, and contributors as appropriate

[ZLLentz]

Context: I asked Tong to add context to her release notes from #1292
Thank you Tong!