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

 Code: CMB
Latitude: 38.03456
Longitude: -120.38650
Elevation: 697.0
Depth: 
Name: Columbia College
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:
=================
DWSS 19861106-19920601
BDSN opened 19920626
USNN opened 19920910
Coords corrected 20000624
Data at the ISC for 40 years between 1965 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
================================================================================================================================
CMB Columbia College 38.03500 -120.38500 719.0 25-08-1999 25-08-1999 
 California