Ted -- When MK was a faculty member of a workshop I assisted at, he passed out a sheet with suggested times based on the one's meter readings (times for Tri-X and Tmax400). And included were suggested times for both films at f5.6 under different night lighting conditions. I assume he created the times through personal experience. I hand them out to our students all the time...great starting points.

MK would often have more than one camera making exposures at the same time.