# Strange pattern in HB Daylight factor

**URL:** <https://discourse.ladybug.tools/t/strange-pattern-in-hb-daylight-factor/19982>\
**Category:** honeybee\
**Tags:** daylight, honeybee\
**Created:** [November 7, 2022, 3:04pm UTC](https://discourse.ladybug.tools/t/strange-pattern-in-hb-daylight-factor/19982 "2022-11-07T15:04:45Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![charlie.brooker](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/charlie.brooker/32/27164_2.png) [@charlie.brooker](https://discourse.ladybug.tools/u/charlie.brooker)\
**Post date:** [November 7, 2022, 5:00pm UTC](https://discourse.ladybug.tools/t/strange-pattern-in-hb-daylight-factor/19982/3 "2022-11-07T17:00:22Z")

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Hi @og, I’ve seen this before and for me it was an ambient resolution problem. You can plug the Ambient Resolution component into the additional\_par\_ input of the Radiance Parameter component.

It might also be worth considering how large your context is and if it’s really relevant - I think one of the reasons a higher -ar input is needed is due to the size of the model + context. The smaller your total model size the lower the -ar input needs to be. To find out more you might need to look on the Radiance forum, the pdf below by John Mardaljevic is also quite useful

> **[Ambient Resolution](https://docs.ladybug.tools/hb-radiance-primer/components/3_recipes/ambient_resolution)**

> **[Radiance Parameter](https://docs.ladybug.tools/hb-radiance-primer/components/3_recipes/radiance_parameter)**

> **[JM\_AmbientCalculation.pdf](https://www.radiance-online.org/community/workshops/2011-berkeley-ca/presentations/day1/JM_AmbientCalculation.pdf)**
>
> 7.29 MB

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