Hi Sloop,
I find that a combination of stress (usually work related) and exhaustion help my attacks to increase. i try my best to eliminate stress from my life, but as you know, thats not always possible.
I rely on my meds to help me and my good old fashioned breathing exercises-
its great that you are monitoring your symptoms and tracking if there is a pattern.
All the best and keep in touch,
Maz XX