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

Code: URA
Latitude:  42.15833
Longitude:  142.78167
Elevation:    30.0
Depth: 
Name: Urakawa
Region: Hidaka,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 URAKAW

Data at the ISC for 69 years between 1924 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
================================================================================================================================

URA    Urakawa                                                       42.15830  142.78200      30.0         21-01-2003             
       Hidaka