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

Code: HAK
Latitude:  41.81500
Longitude:  140.75833
Elevation:    35.0
Depth: 
Name: Hakodate
Region: O shima,Japan
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
XC2-JJY
JMA code HAKODA

Data at the ISC for 73 years between 1920 and 1995.

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

HAK    Hakodate                                                      41.81500  140.75800      35.0         21-01-2003             
       O shima

HAK    Hakodate                                                      41.81500  140.75833      35.0                                
       O shima