1970 06 17.65   7.13  12.39 
1970 07 18.73   3.59  11.16 
1970 08 19.53   5.89  12.71 
1970 09 21.26 -99.99 -99.99 
1970 10 28.16 -99.99 -99.99 
1970 11 31.31  11.66  21.48 
1970 12 35.95  16.86  26.40 
1971 01 99.99  18.00 -99.99 
1971 03 31.28  17.45  24.37 
1971 04 26.24   9.77  18.00 
1971 05 21.47   4.94  13.20 
1971 06 18.74   6.99  12.86 
1971 07 18.12   4.29  11.20 
1971 08 18.67   3.65  11.16 
1971 09 21.50   5.89  13.69 
1971 10 24.57   6.69  15.63 
1971 11 27.19   8.41  17.79 
1971 12 34.24  14.76  24.50 
1972 01 37.50  18.60  28.05 
1972 02 37.30  20.25  28.77 
1972 03 34.68  16.52  25.60 
1972 04 28.95  10.69  19.82 
1972 05 25.52   9.84  17.68 
1972 06 19.10   5.85  12.47 
1972 07 99.99   4.15 -99.99 
1972 08 99.99   5.49 -99.99 
