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Station details:
================

Code: GRA4
Latitude:  49.56550
Longitude:   11.43590
Elevation:   503.0
Depth: 
Name: Grafenberg Array
Region: Bayern,Germany
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
 

Station comments:
=================

opened 197903

Data at the ISC for 36 years between 1980 and 2024.