******************************************************
             *                                                    *
             *   ARIZONA METEOROLOGICAL NETWORK WEEKLY SUMMARY    *
             *                                                    *
             *                       TUCSON                       *
             *                        2013                        *
             *                                                    *
             ******************************************************


     DATE    AIR TEMP   REL HUM  SOIL TEMP  WIND   SOLAR RAIN  ETo  HEAT UNITS
                                   4"  20"  SPEED   RAD
             MX MN AV   MX MN AV   AV  AV  MX  AV                    55  50  45
    ------  --- -- --  --- -- --  --- ---  -- ----  ---  ----  ---- --- --- ---
    MAY  12  91 62 79   55 10 20   70  67  24  7.8  700  0.00  0.38  21  26  31

    MAY  13  94 61 80   34  6 16   69  67  21  5.6  712  0.00  0.37  21  26  31

    MAY  14  96 66 83   40  8 17   71  67  18  4.3  714  0.02  0.35  24  28  33

    MAY  15  96 63 82   42  9 19   74  68  23  6.0  705  0.00  0.37  22  27  32

    MAY  16  96 61 81   58  6 18   72  69  22  4.7  720  0.00  0.35  21  26  31

    MAY  17  94 62 79   39  6 17   73  69  25  5.4  697  0.00  0.35  21  26  31

    MAY  18  90 60 77   59  8 20   71  68  20  5.4  718  0.01  0.35  19  24  29

    ------  --- -- --  --- -- --  --- ---  -- ----  ---  ----  ---- --- --- ---
   AVERAGE   94 62 80   47  8 18   71  68      5.6  709
   TOTALS                                                0.03  2.52 149 184 219

                            ANNUAL & SEASONAL TOTALS
              ----------------------------------------------------
               HEAT UNITS^                CHILL INFORMATION^^
              -------------         ------------------------------
              86/55F = 1200         HOURS OF TEMP BELOW 45F = 1081 
              86/50F = 1632         HOURS OF TEMP BELOW 32F = 232 
              86/45F = 2140         HOURS OF TEMP ABOVE 68F = 722 

   ****************************************************************************
   *                          ABBREVIATIONS AND UNITS                         *
   *                                                                          *
   *   MX : MAXIMUM FOR DAY          AIR TEMP : AIR TEMPERATURE IN DEGREES F  *
   *   MN : MINIMUM FOR DAY          REL HUM : RELATIVE HUMIDITY IN %         *
   *   AV : AVERAGE FOR DAY          SOLAR RAD : SOLAR RADIATION IN LANGLEYS  *
   *   WIND SPEED : IN MILES/HOUR    SOIL TEMP : SOIL TEMPERATURE AT 4 AND 20 * 
   *                                             INCHES IN DEGREES F          *
   *   RAIN : RAINFALL IN INCHES     ETo : REFERENCE CROP EVAPOTRANSPIRATION  *
   *                                       IN INCHES                          *
   *                                                                          *
   *            ## or 999 : MISSING DATA                                      *
   *                   55 : TEMPERATURE LIMITS = 86/55F                       *
   *                   50 : TEMPERATURE LIMITS = 86/50F                       *
   *                   45 : TEMPERATURE LIMITS = 86/45F                       *
   *                   ^  : ACCUMULATED SINCE JAN 1                           *
   *                   ^^ : ACCUMULATED BETWEEN  NOV 1 AND MARCH 31           *
   ****************************************************************************