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

Code: YBH
Latitude:  41.73204
Longitude: -122.71039
Elevation:  1059.7
Depth: 
Name: Yreka Blue Horn Mine, Yreka
Region: California,U.S.A.
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
Amplitude analysis
 On the top graph every dot represents the median value for that 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 (if present) shows twice the standard deviation (2 * smad).
The bottom graph shows the number of observations for each month. Any red columns show those observations whose monthly median value is greater than twice the standard deviation (2 * smad) from the overall (running) median (shown in the top graph by red dots).

Red dots indicate a possible calibration error.
 

Station comments:
=================

updated co-ordinates 2009/10/19

Data at the ISC for 33 years between 1993 and 2025.

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

YBH    Yreka Blue Horn                                               41.73180 -122.71000     969.0         25-08-1999 25-08-1999  
       California

YBH    Yreka Blue Horn                                               41.73203 -122.71039    1059.7         25-08-1999 23-10-2009  
       California,U.S.A.