For 4 chin ups 10 marks For 5 chin ups 11 marks For 6 chin ups 12 marks For 7 chin ups 13 marks For 8 chin ups 14 marks For 9 chin ups 15 marks For 10 chin ups 16 marks. For 11 chin ups 17 marks For 12 chin ups 18 marks For 13 chin ups 19 marks For 14 chin ups 20 marks For chin ups more than 14 times no extra marks will be awarded