Station details:
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Code: ARMA
Latitude: -30.41831
Longitude:  151.62931
Elevation:  1112.0
Depth: 
Name: Armidale
Region: New South Wales,Australia
Status: 

      

        
     
    
   
   

    

     

      
Arrival picks statistics
     
     

      

      

     
     

      
Travel Time Analysis
     
     

      

      

     
     

      
On the top graph every dot represents the median residual for one month of data. The green line is the overall median; the orange line shows the standard deviation (smad) based on the median absolute deviation (mad), whilst the red line shows twice the standard deviation (2 * smad).
The bottom graph shows the number of residuals for each month. The red columns show the number of residuals whose median (for that month) is outside two standard deviations from the overall median (2 * smad).
Red dots indicate a possible clock error.
     
     

      
Travel time residuals
     
     

      

      

      

     
     

      
Amplitude analysis
     
     

      

     
     

      
 On the top graph every dot represents the median value for that month of data.
The green line is the overall median; the orange line shows the standard deviation (smad) based on the median absolute deviation (mad), whilst the red line (if present) shows twice the standard deviation (2 * smad).
The bottom graph shows the number of observations for each month. Any red columns show those observations whose monthly median value is greater than twice the standard deviation (2 * smad) from the overall (running) median (shown in the top graph by red dots).

Red dots indicate a possible calibration error.
     
    
   
 

Station comments:
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opened 19910920
BB opened 19940624

Data at the ISC for 34 years between 1991 and 2024.

Known station history:
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First and Last use refers to the time period in which the coordinates were used by the ISC.

Code   Station name/Region                                           Latitude  Longitude Elevation   Depth  First use   Last use
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ARMA   Armidale                                                     -30.41980  151.62800    1130.0         25-08-1999 18-06-2008  
       New South Wales,Australia

ARMA   Armidale                                                     -30.41831  151.62931    1112.0         18-06-2008 03-09-2010  
       New South Wales,Australia