# LEO Dosimetry – SAA/GCR Separation Using ML - New subgroup

**URL:** <https://awg.osdr.space/t/leo-dosimetry-saa-gcr-separation-using-ml-new-subgroup/3665>\
**Category:** AIML AWG Open Projects\
**Tags:** radlab, proposals\
**Created:** [November 24, 2025, 7:20pm UTC](https://awg.osdr.space/t/leo-dosimetry-saa-gcr-separation-using-ml-new-subgroup/3665 "2025-11-24T19:20:24Z")\
**Posts on this page:** 1\
**Showing post:** 117

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**Author:** ![idildoga.turkmen](https://sea1.discourse-cdn.com/flex001/user_avatar/awg.osdr.space/idildoga.turkmen/32/4365_2.png) [@idildoga.turkmen](https://awg.osdr.space/u/idildoga.turkmen)\
**Post date:** [August 30, 2026, 12:22am UTC](https://awg.osdr.space/t/leo-dosimetry-saa-gcr-separation-using-ml-new-subgroup/3665/117 "2026-08-30T00:22:37Z")

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Hi @martin ,

Thank you for the response. I checked through my uploaded CSVs and found four cases where what appears to be one SAA passage was split across the UTC day boundary:

- **Dec 10 → Dec 11:** 23:47:57–23:58:40 / 00:00:05–00:07:10
- **Dec 12 → Dec 13:** 23:51:21–23:58:33 / 00:00:08–00:05:28
- **Dec 14 → Dec 15:** 23:52:32–23:59:41 / 00:07:07–00:12:30
- **Dec 16 → Dec 17:** 23:54:15–23:59:34 / 00:00:06–00:07:17

These are all UTC. I kept the two segments separately in their respective daily CSVs as discussed, so they can be merged during post-processing.

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