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

Code: JAS
Latitude:  37.94664
Longitude: -120.43933
Elevation:   428.1
Depth: 
Name: Jamestown
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:
=================

Checked against station bulletin
MC1R4-WWVB,XC1R4-WWV,XC1-WWV-WWVB
19640828-19840630
Coords corrected slightly 20000628
DWSS 19801001-19840630
Moved to JAS1

Data at the ISC for 23 years between 1964 and 1986.

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

JAS    Jamestown                                                     37.94670 -120.43800     457.0         25-08-1999 25-08-1999  
       California

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