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

Code: TYS
Latitude:  38.52680
Longitude:  -90.56600
Elevation:   195.0
Depth: 
Name: Tyson Valley
Region: Missouri,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.
 

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

opened 19740219
USTN 19800618-before 198211
19940504-19960412

Data at the ISC for 21 years between 1964 and 2002.