This is sample output to compute Average Pressure for 
Siple Dome 89381099  October 1999


  Day    Avg Pressure    Num of Errors
 1         873.92            17
 2         859.29            32
 3         854.19            50
 4         865.53            50
 5         873.94            39
 6         850.95            22
 7         859.72             8
 8         869.39             2
 9         869.44             5
10         858.92            11
11         860.93            33
12         864.70            44
13         858.62            52
14         862.41            42
15         868.43            24
16         872.50             9
17         878.04             0
18         873.48             1
19         868.13            19
20         868.21            26
21         867.01            44
22         872.25            54
23         871.45            44
24         861.93            24
25         861.70            15
26         866.83             4
27         872.95             6
28         876.90            11
29         860.51            25
30         856.17            42
31         871.76            53