Both day and evening PA pick 3 draw histories comprise of a little over 25% of the draws being classified as NNN, but the appearance of an NNN happens in over 80% of all 7 draw groups.

Day and evening PA pick 5 draws that are made up of NNNNN happen overall slightly less than 20% of all draws, but still appear in over 50% of all 7 draw groups.

There is something here, just have to determine exactly how to take the next step...