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

Code: WEL
Latitude: -41.28403
Longitude:  174.76820
Elevation:   138.0
Depth: 
Name: Wellington
Region: North Island,New Zealand
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:
=================

Checked against station bulletin
XCAR24-LOCAL
Station Code WELA used for a Wood-Anderson instrument
Station Code WELO used for a low-gain vertical instrument

Data at the ISC for 105 years between 1920 and 2024.