1040-1 



1035 



1030 



1025- 



1020 : 



1015 



c 1010-1 



Q. 



w 



° 1005 



< 



1000 : 



995 : 

 990 



Year Mean, mb 



x X1987 1016.9 



9 «1983-87 1017.1 



>:- -f i 



Clr?.'! 



YX'\ iyiy JflfT.-: 



JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 

 Month 



Figure 4. Daily barometric pressure values with monthly means 



instrument's accuracy was 0.5 percent for precipitation amounts less than 

 15 cm and 1.0 percent for amounts greater than 15 cm. 



21. The rain gage was inspected daily, and the analog chart recorder 

 was maintained by procedures similar to those for the microbarograph. 



22. Plastic rain gage. An Edwards Manufacturing Company (Alberta Lea, 

 MN) True Check 15-cm-capacity clear plastic rain gage with a 0.025-cm resolu- 

 tion was used to monitor the performance of the weighing rain gage. This 

 gage, located near the weighing gage, was compared daily; and very few dis- 

 crepancies were identified during the year. 



Results 



23. Daily and monthly average precipitation values are shown in 

 Figure 5. Statistics of total precipitation for each month during this year 

 and average totals for all years combined are presented in Table 2. 



12 



