# Independent measurements suggest under about 5 ppb above 60 km and up to about 100 ppb near 50 km.

> Independent measurements suggest under about 5 ppb above 60 km and up to about 100 ppb near 50 km.

Source: https://mysteriesdept.com/mysteries/venus-phosphine/evidence/EVD0CQY21JA7WXZ/independent-measurements-suggest-under-about-5-ppb-above-60  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Phosphine in the clouds of Venus](https://mysteriesdept.com/mysteries/venus-phosphine)Evidence

Evidence · Phosphine in the clouds of Venus

# Independent measurements suggest under about 5 ppb above 60 km and up to about 100 ppb near 50 km.

Independent measurements suggest under about 5 ppb above 60 km and up to about 100 ppb near 50 km.

Speculative0

## What it bears on 1 answer

[Phosphine varies with altitude and time, destroyed by sunlight high up and more abundant within the clouds,…](https://mysteriesdept.com/mysteries/venus-phosphine/answers/ANS0CQY21AG099B/phosphine-varies-with-altitude-and-time-destroyed-by)

Still possible

FOR

## Cite it

```
Mysteries Department. (2026). Independent measurements suggest under about 5 ppb above 60 km and up to about 100 ppb near 50 km. [Evidence EVD0CQY21JA7WXZ]. https://mysteriesdept.com/r/EVD0CQY21JA7WXZ
```

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**EVD** 0CQY21JA7WXZ

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Evidence

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Speculative

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1

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