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

 Code: NRCA
Latitude: 42.83356
Longitude: 13.11428
Elevation: 927.0
Depth: 
Name: Norcia
Region: Italy
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:
=================
opened 19971023
Coords corrected slightly 20020122
Data at the ISC for 24 years between 1997 and 2020.
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
================================================================================================================================
NRCA Norcia 42.83333 13.11306 880.0 03-03-2000 03-03-2000