For monthly and annual means, thresholds, and sums:
 Months with  5 or more missing   days are not considered
 Years  with  1 or more missing months are not considered

Station:(107346) PRESTON                  
From Year=1964 To Year=1999                                   #Day-Max #Day-Min
       Averages         Daily Extremes         Mean Extremes   >=   =<   =<  =<
    Max  Min Mean  High---Date  Low---Date   High-Yr  Low-Yr   90   32   32   0
-------------------------------------------------------------------------------
Ja 30.9 12.6 21.8  54  24/1970 -25  17/1984  30.2 94 13.6 89  0.0 16.6 29.4  5.8
Fe 36.8 15.7 26.3  62  27/1986 -31  06/1982  34.2 95 14.3 85  0.0  8.5 27.2  3.3
Ma 48.1 24.5 36.3  74  23/1972 -12  13/1969  43.7 86 25.3 69  0.0  1.3 26.3  0.4
Ap 57.7 31.1 44.4  83  26/1987  12  01/1970  51.8 92 37.0 70  0.0  0.0 17.2  0.0
Ma 68.1 38.9 53.5  87  28/1983  21  06/1965  59.3 94 49.7 91  0.0  0.0  5.2  0.0
Jn 77.1 44.9 61.0  95  27/1986  27  14/1970  66.0 86 58.0 69  2.0  0.0  0.4  0.0
Jl 86.6 50.7 68.6 101  10/1985  32  01/1968  72.6 85 61.8 93 11.1  0.0  0.0  0.0
Au 86.6 50.0 68.3  99  08/1990  30  26/1992  71.2 81 62.7 68 11.6  0.0  0.1  0.0
Se 75.4 41.1 58.2  94  14/1990  13  19/1965  64.9 90 51.3 65  1.0  0.0  3.9  0.0
Oc 61.4 31.4 46.4  84  07/1980  12  30/1971  50.0 92 41.4 84  0.0  0.1 16.9  0.0
No 44.8 23.6 34.2  68  14/1990  -8  26/1992  40.8 95 26.9 94  0.0  3.0 25.8  0.5
De 32.4 13.5 23.0  65  02/1995 -31  23/1990  31.2 95 13.2 90  0.0 14.9 29.4  4.4
An 58.8 31.5 45.2 101 19850710 -31 19820206  47.9 94 42.0 85 25.6 44.5181.8 14.4
Wi 33.4 13.9 23.7  65 19951202 -31 19820206  29.8 70 15.9 85  0.0 40.0 85.9 13.5
Sp 58.0 31.5 44.7  87 19830528 -12 19690313  51.4 92 40.9 70  0.0  1.3 48.8  0.4
Su 83.4 48.6 66.0 101 19850710  27 19700614  68.7 94 62.0 93 24.6  0.0  0.5  0.0
Fa 60.5 32.0 46.3  94 19900914  -8 19921126  49.3 90 42.7 85  1.0  3.1 46.6  0.5
Station:(107346) PRESTON                   From Year=1964 To Year=1999
Missing data not yet determined
       Total Precipitation       Precipitation  Total Snowfall  #Days Precip >=
    Mean   High--Yr    Low--Yr     1-Day Max    Mean   High-Yr .01 .10 .50 1.00"
-------------------------------------------------------------------------------
Ja  1.33   2.97  97   0.29  66   1.05  02/1997  11.4  30.0  97   9   5   0   0
Fe  1.20   3.35  86   0.05  88   1.58  18/1986   7.8  20.0  74   7   4   0   0
Ma  1.41   5.19  82   0.07  65   1.39  13/1995   3.7  13.0  98   8   4   0   0
Ap  1.43   2.72  99   0.18  73   0.93  11/1982   1.3   7.5  67   9   5   0   0
Ma  2.13   7.64  81   0.00  82   1.42  22/1981   0.0   0.5  67  10   6   1   0
Jn  1.55   3.56  67   0.09  86   2.04  03/1980   0.0   0.0  65   7   4   1   0
Jl  0.92   2.35  87   0.05  66   1.09  22/1987   0.0   0.0  65   5   3   1   0
Au  1.09   3.21  68   0.00  85   1.37  30/1971   0.0   0.0  65   5   3   1   0
Se  1.43   4.99  86   0.22  87   2.20  28/1986   0.0   0.0  65   6   4   1   0
Oc  1.55   5.10  81   0.07  65   1.43  10/1983   0.7   5.4  71   6   4   1   0
No  1.39   3.50  65   0.04  93   0.98  23/1965   2.9   9.5  94   8   5   0   0
De  1.53   4.77  83   0.10  86   0.83  07/1983  11.5  28.5  96   9   5   0   0
An 16.96  25.60  83  12.61  69   2.20 19860928  39.3  70.5  96  89  51   7   1
Wi  4.06   7.71  97   1.78  90   1.58 19860218  30.7  61.0  97  25  14   1   0
Sp  4.97   8.19  95   1.01  88   1.42 19810522   5.0  18.5  67  26  15   2   0
Su  3.56   6.59  80   0.74  66   2.04 19800603   0.0   0.0  65  17   9   2   0
Fa  4.37   9.19  83   1.71  68   2.20 19860928   3.6  10.4  71  20  13   2   0