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

Code: NNZ
Latitude: -41.21708
Longitude:  173.37950
Elevation:   130.0
Depth: 
Name: Nelson
Region: South 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:
=================

opened 20030812
Coordinates coorrected on 01-07-2004, NZGD49 datum

Data at the ISC for 18 years between 2003 and 2020.

Known station history:
======================

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
================================================================================================================================

NNZ    Nelson                                                       -41.21661  173.36661       0.0         15-08-2003 01-07-2004  
       South Island,New Zealand