3.4.22.33 3.5 5.5 over 50% of maximal activity within this range 3.4.22.33 3.5 8.5 - 3.4.22.33 4 9 - 3.4.22.33 5.5 8.5 over 50% of maximal activity within this range 3.4.22.33 5.5 8 over 50% of maximal activity within this range