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

Code: HEN
Latitude:  22.00547
Longitude:  120.73806
Elevation:    22.1
Depth: 
Name: Hengchun
Region: Taiwan region
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
Henchuan. Correction to coordinates Nov 1990
C2R24-JJY-BPV(U)
Borehole inst elev -128m

Data at the ISC for 89 years between 1923 and 2024.

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

HEN    Hengchun                                                      22.00550  120.73800      22.0         25-08-1999 25-08-1999  
       Taiwan