# Why is P or N export larger than P or N load in result?

**URL:** <https://community.naturalcapitalalliance.org/t/why-is-p-or-n-export-larger-than-p-or-n-load-in-result/5938>\
**Category:** Science, Research & Data\
**Tags:** ndr\
**Created:** [April 13, 2025, 11:27am UTC](https://community.naturalcapitalalliance.org/t/why-is-p-or-n-export-larger-than-p-or-n-load-in-result/5938 "2025-04-13T11:27:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Momo1](https://avatars.discourse-cdn.com/v4/letter/m/bbe5ce/32.png) [@Momo1](https://community.naturalcapitalalliance.org/u/Momo1)\
**Post date:** [April 13, 2025, 11:27am UTC](https://community.naturalcapitalalliance.org/t/why-is-p-or-n-export-larger-than-p-or-n-load-in-result/5938/1 "2025-04-13T11:27:49Z")

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In the results of NDR, the average value of N or P export is smaller than that of modified\_load N or P. I think it’s reasonable. But the maximum value of N or P export is larger than that of the modified\_load N or P. As a result, modified\_load minus export will appear negative values. Is it a wrong result because of the negative values in retention? Is there a way to solve this? Thank you!

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**Author:** ![edavis](https://avatars.discourse-cdn.com/v4/letter/e/71c47a/32.png) [@edavis](https://community.naturalcapitalalliance.org/u/edavis)\
**Post date:** [April 16, 2025, 9:28pm UTC](https://community.naturalcapitalalliance.org/t/why-is-p-or-n-export-larger-than-p-or-n-load-in-result/5938/2 "2025-04-16T21:28:08Z")

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Hi @Momo1, welcome, and thanks for your question!

First, I want to point you this [caution about directly interpreting absolute values in NDR results](https://community.naturalcapitalalliance.org/t/ndr-output-conceptual-understanding/2416/2).

That said, this does seem like an unexpected result. Are you able to share your data? If so, we could take a look and see if we can find what might be causing this behavior.