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30th April 2005 | 02:38

#18 (permalink)

jabberwok

Joined: May 2001

Posts: 661

Likes: 2

From: up North

Quote:

What sort of conditions (numbers) should I look out for to get the highest chance of producing these things?

About ten seconds before the airfield fogs out..

SSD is right - Temp and Dew Point as close as possible. You need really high humidity.