No incidence angle data or range for SWOT L2 LR data

[galasnow]

Hello:
Question: Recently I want to make incidence angle correction for SWOT L2_LR_SSH sigma0 data, but no incidence angle data is included in the .nc file, neither a incidence range is explicitly declared in the related documentation. How can I get the actual incidence angle data or range?
"D-105502_SWOT_ATBD_L2_LR_SSH_20230724a_cite2.pdf" give a "about 4° incidence angle", but no incidence of near range is available, and I prefer more actual data.
If anyone could give any help, I will appreciate it a lot.
I have noticed a similar question at Apr 23, 2025 (viewtopic.php?t=6707&sid=2ba86fb89eff932b8f0ee58191f8136a), unfortunately, nobody answer that question.