MAGNET GPS Station - Photo by Geoff Blewitt

Station ID : NOA1

Station operator information from: RINEX headers

When using products from this system please cite Blewitt et al., (2018) for the processing plus also the citation for the original data.


Latitude: 38.047 degrees

Longitude: 23.864 degrees

Height: 537.817 meters

Time Series Data

(ascii text)
24 Hour Final Solutions


tenv3 or tenv




5 Minute Final Solutions


kenv tar files for download

Quality Assurance (QA) Files


.qa.gz file download

5 Minute Troposphere Solutions

Tot./Wet Zenith Delay, etc.

tar file download

New!: Loading Predictions.
See this README file for explanation.


tenv3 file with extra columns

Readme Files:

tenv3 format, tenv format, xyz format,
kenv format, trop format, QA file format,
Loading triplet enhanced tenv3 files
(Note: When using the MIDAS software
use the .tenv files linked above)

Nearest 4 Other Stations Distance


5.41 km


6.94 km


6.95 km


9.13 km

Time Series Plots

Click on the buttons on the left below to choose from available reference frames, latencies, and sample rates. Original, Cleaned (outlier removed) and detrended (using MIDAS rate) plots are available. See plot explanation page for further explanations on plot contents.

GPS time series plot
GPS time series plot
GPS time series plot
GPS time series plot
GPS time series plot
QA plot
Load prediction plot

Steps Information for this station

Station ID Date
Equipment Change Type/
or Event ID
NOA116MAR05 Elevation_Cutoff_Changed - -
NOA108JAN06 usp000fw2w 6.2 138.5
NOA108FEB14 usp000fyw4 6.9 259.3
NOA108FEB14 usp000fywh 6.5 259.3
NOA108JUN08 usp000g8vs 6.4 205.1
NOA113OCT12 usb000kbn7 6.6 286.9
NOA114MAY24 usb000r2hc 6.9 281.8
NOA118OCT25 us1000hhb1 6.8 296.5
NOA120OCT30 us7000c7y0 7.0 256.5
Distance is from this station to earthquake epicenter in km. A potential step record appears when this distance is less than 10^(M/2 - 0.79) where M is earthquake magnitude.
Steps for all stations are given in the master step file database.

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