The area is how many Hydrogens are on the graph. You would need a correlation table to determine what groups are on the figure. First, calculate the degrees of saturation. (18- 10)/2 = 4 degrees this could be a ring wth 3 pi bonds maybe benxene Solution The area is how many Hydrogens are on the graph. You would need a correlation table to determine what groups are on the figure. First, calculate the degrees of saturation. (18- 10)/2 = 4 degrees this could be a ring wth 3 pi bonds maybe benxene.