Air Graphing Instructions

  1. Plots are selected from List 1 and List 2.  These 2 lists determine how stations and parameters are selected --- stations first....then parameters OR parameters first .... then stations.   To change the order of the lists, use the 'Select' options above list 2.  Clicking on a selection in List 1 determines what selections are available in List 2.  Not all items are available at every station, and in fact stations are sited differently depending on the pollutant.  Clicking on an item in List 2 (or clicking 'Add selection' will add the station-parameter combination to the grid and chart.  Items added to the grid will remain on the grid and chart until the user deletes an individual item or clicks the 'Clear grid' button.  Clicking 'Add all items' will add all of the items in List 2). 
  2. The date-time duration is initially set at 7 days with the ending date defaulting to today's date . The date-time interval can be changed by changing the selections on 'Start Date' and 'End Date'.  Dates can be selected either by typing a date in the textbox or by opening the control and navigating through the calendar selections (users must click on a specific day to actually select a date.....selecting just a year and month is not sufficient).
  3. Group selections:  To allow users to easily focus on sites in their particular area of interest a dropdown list is available that offers selections based on particular regions of Washington State so that only those sites will be displayed in List 1 or List2. 
  4. Grid features:  The default grid view opens in the 'Select Hour - Day Avgs' mode.
  5. The 'Display AQI Category' is enabled only if all the parameters in the grid are the same AQI type (with the correct averaging period).  If a category is selected, the background of the plots will display the AQI categories for the selected item. (Note: If "AQI" is selected as an averaging period and you choose to display AQI categories the selection will be forced to "AQI units".
  6. The default y-axis scaling is auto-scaling. To manually change the scaling, click the "Up" or "Down" button.
  7. The 'View Grid of Plotted Data' button will display in a separate grid, all of the values that make up each trace in the chart display.
  8. The two buttons 'Create Plotted Data File' and 'Download Plotted Data File' will save all of the values that make up each trace in the chart display to a .csv or .xml file to a user's PC.