# Background 0.41 ± 0.16 ppbv over five years with spikes of about 7 ppbv.

> Background 0.41 ± 0.16 ppbv over five years with spikes of about 7 ppbv.

Source: https://mysteriesdept.com/mysteries/mars-methane/evidence/EVD0D7EXY6G39D8/background-0-41-0-16-ppbv-over-five-years-with-spikes-of  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Mars methane puzzle](https://mysteriesdept.com/mysteries/mars-methane)Evidence

Evidence · Mars methane puzzle

# Background 0.41 ± 0.16 ppbv over five years with spikes of about 7 ppbv.

Background 0.41 ± 0.16 ppbv over five years with spikes of about 7 ppbv.

Supported0

## What it bears on 1 answer

[Methane is present near the surface at Gale at a background of a few tenths of a ppbv, with occasional…](https://mysteriesdept.com/mysteries/mars-methane/answers/ANS0D7EXXYP7TFK/methane-is-present-near-the-surface-at-gale-at-a-background)

Disputed

FOR

## Cite it

```
Mysteries Department. (2026). Background 0.41 ± 0.16 ppbv over five years with spikes of about 7 ppbv. [Evidence EVD0D7EXY6G39D8]. https://mysteriesdept.com/r/EVD0D7EXY6G39D8
```

Key

**EVD** 0D7EXY6G39D8

Kind

Evidence

Tier

Supported

Version

1

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