Station details:
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Code: FRI
Latitude:  36.99170
Longitude: -119.70800
Elevation:   119.0
Depth: 
Name: Friant
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
 

Station comments:
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Checked against station bulletin
MC1R1-WWV
opened 19710309
USTN 19780202-before 199208

Data at the ISC for 40 years between 1971 and 2021.