Station details:
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Code: GRSN
Latitude:  40.92440
Longitude:   38.26810
Elevation:   536.0
Depth: 
Name: GIRESUNGRSN
Region: Turkey
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.
 

Station comments:
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opened 23-09-1999 00:00:00 ; closed 01-01-2001 00:00:00
DDA - station closed in 2001 - re-opened in 2005. (Previously code reserved for German regional seismic network - no data in ISC database for it).

Data at the ISC for 8 years between 2005 and 2012.