there are 9 groups of 4 numbers (everyone can choose the groups)
GROUP 1
GROUP 2
GROUP 3
GROUP 4
GROUP 5
GROUP 6
GROUP 7
GROUP 8
GROUP 9
system 1: i want to know what is the coldest group of them, so i can play 4 numbers en plein

system 2: i want to know what is the 2 coldests group of them, so i can play 8 numbers en plein

p.s.: i can upload an excel file with more explanaition if not clear enough here