Note this is the standard group chart. The site uses the modified Techology! group chart which diverges at Group 7. This results in addtional D6 being added at group 7 and above. So Group 7 is 2D10 + 1D6, Group 8 is 2D10 + 2D6 and so on. The maximum attribute group calculated on the site is Group 11, 2D10 + 5D6.