Density, g/em* 
Year Mean, g/cm> 
wee x—x 1991 1.0220 
O--=-© 1980-91 1.0222 
1.029 
1.028 
1.027 
1.026 
Se 
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 
Month 
Figure 21. Daily water density values with monthly means 
49 
