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

Code: JYA
Latitude:  38.59300
Longitude:  139.71383
Elevation:   200.0
Depth: 
Name: Atsumi
Region: Yamagata,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:
=================

JMA code YATSUM

Data at the ISC for 30 years between 1994 and 2023.

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

JYA    Atsumi                                                        38.59300  139.71400     200.0         25-08-1999 25-08-1999  
       Yamagata

JYA    Atsumi                                                        38.59300  139.71383     200.0         25-08-1999 03-03-2000  
       Yamagata