Latest
| Water Temperature | C | |
| Salinity | ||
| Conductivity | S/m | |
| Nitrate | µM | |
| Turbidity | NTU | |
| Dissolved O2 | ml/l | |
| O2 Saturation | ml/l | |
| Dissolved Organics | QSDE | |
| Chlorophyll | µg/l | |
| Battery Voltage | Volts |
| Air Temperature | C | |
| Wind Speed | knots | |
| Wind Direction | ° True | |
| Wind Speed (Peak Gust) | knots | |
| Pressure | mbar | |
| Pressure Tendency | mbar/h | |
| Rain | mm | |
| Rain over 24 hours | mm | |
| Solar Radiation | W/m² | |
| UV Index | ||
| Humidity | % | |
| Wind Chill | C | |
| Heat Index | C |
LOBOViz CGI Data Service
The LOBOViz server has a public CGI (Common Gateway Interface) that allows remote clients to request and receive LOBO sensor data via HTTP (Hyper-Text Transfer Protocol). This page describes how to access the CGI and retrieve sensor data.
CGI URL
The LOBOViz data CGI for this server is published at the following URL:
- http://nwarm.loboviz.com/cgi-bin/nph-data.cgi
CGI Data Query Parameters
Parameters are appended to the URL after a '?' character and are each is subsequently separated by a '&' character.
The following common parameters are supported:
| Parameter | Description |
|---|---|
| min_date | first day of data query in format [YYYYMMDD] |
| max_date | last day of data query in format [YYYYMMDD] |
| y | comma-separated list of measurement names for dependent variable(s) |
| data_format | required to be 'text' for text output |
Rather than specific min_date and max_date, there are two alternate date selectors:
| Parameter | Description |
|---|---|
| days=n | the most recent n days from today |
| newest=n | the most recent n measurements |
The following common measurement names are examples of the 'y=' independent variable list:
| Name | Description |
|---|---|
| cdom | colored dissolved organic matter |
| conductivity | conductivity |
| oxygen | dissolved oxygen |
| fluorescence | fluorescence |
| nitrate | nitrate concentration |
| oxygen_sat | oxygen saturation |
| voltage | power supply voltage |
| salinity | salinity |
| scattering | scattering coeff |
| temperature | water temperature |
| turbidity | turbidity |
CGI Data Result Format
The data are returned as tab-separated text representations of numeric values. The first line of the returned data is a header of tab separated names and units for each data column. Each subsequent line displays local date/time in format [YYYY-MM-DD hh:mm:ss], followed by a numeric value for each requested measurement, all fields separated by tabs.
Example
For example, if you want to retrieve nitrate and salinity for September 29, 2008 to October 7, 2008 the URL would be:
Click the above URL to see the tab-separated text data returned by the server. That is common example: exact identifiers for sites and sensors can be found by using the PermaLink feature on the graph results page.
Scripted Usage
Any programming language with HTTP support can be used to directly access the LOBO data CGI and process the returned sensor measurements. Alternately, an HTTP utility such as wget can be invoked to retrieve the data and save to local file for later processing.