TiltMeter Low-Rate Raw Data
These are raw uncalibrated data from RBRconcerto tiltmeters (not parsed), currently sampled at 20 SPS and 5SPS, product of a middleware driver.
Oceans 23.0 API filter: dataProductCode=APTAPTLOW
RBR manufacturer data sheet: http://rbr-global.com/wp-content/uploads/2017/10/0005642revA-RBRconcerto-APT.pdf
...
- 20180503: Initial release
- 20221223: changes to accommodate new dataproductID=195 to separate -20SPS and -5SPS .apt data
Formats
Format is .apt, consisting of comma-separated numeric values as shown in the section below. The file names end in either with -5SPS or -20SPS with file extension .apt, depending on the sampling rate. Low rate raw data is also available via data product 195.
Oceans 23.0 API filter: extension=apt
ONC also sends the .apt files to IRIS, as currently done with seismometer data (102). Example: httphttps://service.iris.edu/fdsnws/dataselect/1/query?net=NV&sta=CBC27&loc=Z1&cha=AHD&starttime=2019-10-05T00:00:00&endtime=2019-10-05T01:00:00&format=geocsvminiseed&nodata=404
Examples
A sample .apt file would look as follows:
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| No Format |
|---|
20221221T194744.449Z, 2022-12-21 |
...
19: |
...
47: |
...
43. |
...
099, |
...
2000-05- |
...
19 |
...
03: |
...
20: |
...
47. |
...
650, |
...
30425949. |
...
692726135, |
...
30019071. |
...
577116847, |
...
30922182. |
...
090580463, |
...
5835970. |
...
132611692, |
...
29072933. |
...
522984385, |
...
5855472.229886800 20221221T194744.650Z, 2022-12-21 |
...
19: |
...
47: |
...
43. |
...
299, |
...
2000-05- |
...
19 |
...
03: |
...
20: |
...
47. |
...
700, |
...
30425949. |
...
888303875, |
...
30019071. |
...
418792009, |
...
30922182. |
...
360664006, |
...
5835970. |
...
125626773, |
...
29072939. |
...
092293381, |
...
5855472.239200026 20221221T194744.851Z, 2022-12-21 |
...
19: |
...
47: |
...
43. |
...
499, 2000-05- |
...
19 |
...
03: |
...
20: |
...
47. |
...
750, |
...
30425949.329510331, |
...
30019071. |
...
763381358, |
...
30922183. |
...
068469166, |
...
5835970. |
...
141924918, |
...
29072934. |
...
370487928, |
...
5855472.222901881 20221221T194745.053Z, 2022-12-21 |
...
19: |
...
47: |
...
43. |
...
699, |
...
2000-05- |
...
19 |
...
03: |
...
20: |
...
47. |
...
800, |
...
30425950. |
...
158387422, |
...
30019071. |
...
875140070, |
...
30922182. |
...
388603687, |
...
5835970. |
...
137268305, |
...
29072936. |
...
577722430, |
...
5855472. |
...
232215106 |
Each line contains the following information:
| 0 | Middleware timestamp | YYYYMMDDTHHMMSS.sssZ format | Timestamp from the middleware driver |
1 | NTP time | YYYY-MM-DD HH:MM:SS.sss format. | The time that the NTP client reports. This is reset automatically per the configured NTP refresh rate while the NTP source is accessible. |
2 | Logger time | YYYY-MM-DD HH:MM:SS.sss format. | The time that the internal logger reports. Drift should be ±60s/year. |
3 | Accelerometer X period (picoseconds) | Double precision (64 bit) floating point number. | The period of the X (first) channel of the triaxial accelerometer. |
4 | Accelerometer Y period (ps) | Double precision (64 bit) floating point number. | The period of the Y (second) channel of the triaxial accelerometer. |
5 | Accelerometer Z period (ps) | Double precision (64 bit) floating point number. | The period of the Z (third) channel of the triaxial accelerometer. |
6 | Accelerometer temperature period (ps) | Double precision (64 bit) floating point number. | The period of the temperature (fourth) channel of the triaxial accelerometer. |
7 | BPR pressure period (ps) | Double precision (64 bit) floating point number. | The period of the pressure (first) channel of the BPR. |
8 | BPR temperature period (ps) | Double precision (64 bit) floating point number. | The period of the temperature (first) channel of the BPR. |
Sample file with 20 5 SPS for download: RBRTILTMETERACCBPR63055_20191029T07162720221221T194743.144Z049Z-20SPS5SPS.apt
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