for month Feb-16: (Feb-16 + Aug-15 + Feb -15)/3 = 4 to display for avg3monthstotal.
same for other months too
Jan-16 : (Jan-16+July-15+Jan-15)/3
for month Feb-16: (Feb-16 + Aug-15 + Feb -15)/3 = 4 to display for avg3monthstotal.
same for other months too
Jan-16 : (Jan-16+July-15+Jan-15)/3