General NOISE_MASK and NOISE_FREQUENCY

[Ahaut]

Hi everyone, just wondering if there's anyone out there who know how the highlighted parameters below affect glare?

[GODRAYS]
ENABLED=1
USE_SUN_LIGHT=0
; SetLightShaftDiffractionRing()
DIFFRACTION_RING=0
DIFFRACTION_RING_RADIUS=0 ;DEG
DIFFRACTION_RING_ATTENUATION=0.0
DIFFRACTION_RING_SPECTRUM_ORDER=1
DIFFRACTION_RING_OUTER_COLOR=0.5,0.5,0.5,0.5
; SetLightShaftParameters()
COLOR=1,1,1,1
LENGTH=30
GLARE_RATIO=0.0005
ANGLE_ATTENUATION=500
NOISE_MASK=0.01
NOISE_FREQUENCY=1
DEPTH_MASK_THRESHOLD=1

I've been messing around with PP settings for a while now, mainly to try to get the sun to be reasonably blinding, but this raises an issue where I get a sun that's present in overcast conditions and remains bright (although somewhat less than when in clear weather). Now I'm trying to find a 'sweet spot' where the sun is realistically bright unblocked but diminished when cloudy. I have a rough idea of what DEPTH_MASK_THRESHOLD and ANGLE_ATTENUATION do, but I can't seem to figure out the two highlighted above.