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

Code: GRNB
Latitude:  53.84680
Longitude: -129.95750
Elevation:   461.0
Depth:     0.0
Name: Grenville Island
Region: British Columbia,Canada
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:
=================

the network code is CN

Data at the ISC for 9 years between 2014 and 2022.