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

Code: HKC
Latitude:  22.30200
Longitude:  114.17430
Elevation:    27.0
Depth: 
Name: Hong Kong Observatory
Region: Hong Kong,China
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
XC1-JJY-BPV(U)
192110-194112
reopened 195108
WWSS opened 19630508

Data at the ISC for 94 years between 1921 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
================================================================================================================================

HKC    Hong Kong                                                     22.30360  114.17200      27.0         25-08-1999 02-02-2009  
       Hong Kong,China