Shared Tools:  Reference Manual
    Release Level 5.4 Release Date 2008 10 Revision Level 1.0

Time Series Data

AirWare uses two a common data base representation for OBSERVATION and monitoring time series data in a simple format:
    TIMESTAMP VALUE;
  1. for meteorological observations;
  2. for air quality observations
  3. for emisison data (large stacks//boilers).
These data can be historical or real-time with continuous, regular updates.

Time series data are associated either with:

  1. A monitoring station object;
  2. A stack/boiler object in case of emission data.


The available time series can be sorted by variable as well as starting date.

Buttons are available (view, select) to select a given time series, or to first view it, which shows the time series graph together with basic descriptive statistics.

For monitoring stations that include WIND DIRECTION A special analysis of ther wind rose is provided by the ANALYSIS button: the wind rose is generated for 22.5 degree slots.

Patching missing values

Gaps of up to three missing values can be patched with the PATCH button: the values inserted are either based on linear interpolation, or, in the case of wind direction, simplex extrapolation of the last legal value. A small dialog (pop-up)wind reports on the number of succesful or failed patch attempts.

Patched values are marked and shown in GREY in the time series display.

To drop all patched value, a reset button can be used. All patched values will again be replaced by a missing value code (-999).


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