12       raw variables and mean/spread/prob info
U10M   33   105  M1   10  
V10M   34   105  M1   10
U      33   100  M6   1000 850 700 500 300 250 
V      34   100  M6   1000 850 700 500 300 250 
SLP     2   102  M1   0
HGT     7   100  M6   1000 850 700 500 300 250
RH     52   100  M4   850 700 500 300
Q      51   105  M1   2
RH     52   105  M1   2
T      11   100  M4   850 700 500 300
T2M    11   105  M1   2   P1  2     < T1 273.0
T      11   100  M0   P1  850   < T1 273.0
  5      special derived variables, each  of which, needs code to process specially
WIND   32  105  M1  10 P1 10  > T3 12.89 17.5 25.78
WIND   32  100  M6  1000 850 700 500 300 250
THKN   7   101  M1  21860 1000 850 
THKN   7   101  M1  12900 1000 500
THKN   7   101  M1  18005  850 700
 11      Max,min,mode,10,25,50,75 and 90%
T2M    11   105  Q1 2
Q      51   105  Q1 2
RH     52   105  Q1 2
U10M   33   105  Q1 10  
V10M   34   105  Q1 10
SLP     2   102  Q1 0
U      33   100  Q6 1000 850 700 500 300 250 
V      34   100  Q6 1000 850 700 500 300 250 
HGT     7   100  Q6 1000 850 700 500 300 250
RH     52   100  Q4 850 700 500 300
T      11   100  Q4 850 700 500 300

NOTE: M/S*1.94 -> KNOT
      INCH = 25.4 MM = 25.4 KG/M2