1 #include<stdio.h>
2 #include<math.h>
3 #include<stdlib.h>
4 
morgan_1974(double annual_pmm)5 double morgan_1974(double annual_pmm)
6 {
7     double result;
8 
9     result = (((annual_pmm * 9.28) - 8838.0) * 75.0) / 1000.0;
10     return result;
11 }
12 
13 
14