Information provided for each 5-min sampling period includes:
 25 meteorological variables, SO2 emission rate, Stack gas exit
 Temperature, and Conversion Factor (PPB to micrograms/m^3). 

  5-Min Variables Provided
------------------------------------------------
1  DEWPT     = Dewpoint (K)
2  HUMIDITY  = Relative humidity (%)
3  DIF RAD   = Diffuse Radiation (W/m^2)
4  NET RAD   = Net Radiation (W/m^2)
5  NI RAD    = Normal Incident Radiation (W/m^2)
6  PRECIP    = Precipitation (cm)
7  PRESSURE  = Surface pressure (mb)
8  DT10-100  = Temperature difference between 100m and 10m (K)
9  DT10-50   = Temperature difference between 50m and 10m (K)
10 DT2-10    = Temperature difference between 10m and 2m (K)12 
11 TT 10M    = Temperature at 10m (K)
12 TT 50M    = Temperature at 50m (K)
13 TT 100M   = Temperature at 100m (K)
14 WD 10M    = Wind direction at 10m (degrees)
15 WD 30M    = Wind direction at 30m (degrees)
16 WD 50M    = Wind direction at 50m (degrees)
17 WD 100M   = Wind direction at 100m (degrees)
18 SIGWD 10  = Standard deviation of the horizontal wind direction at 10m (degrees)
19 SIGWD 30  = Standard deviation of the horizontal wind direction at 30m (degrees)
20 SIGWD 50  = Standard deviation of the horizontal wind direction at 50m (degrees)
21 SIGWD 100 = Standard deviation of the horizontal wind direction at 100m (degrees) 
22 WS 10M    = Wind speed at 10m (m/s)
23 WS 30M    = Wind speed at 30m (m/s)
24 WS 50M    = Wind speed at 50m (m/s)
25 WS 100M   = Wind speed at 100m (m/s)
26 QSO2      = SO2 emission rate (g/s)
27 STACK TT  = Stack gas exit temperature (K)
28 SO2 Conv  = Converts SO2 concentrations in PPB to micrograms/m^3

   The number of 5-min SO2 receptors varied from one week to the next. So I have
   provided for each one-week archive file, the receptor identifications, coordinates,
   and SO2 values, when such is available.