Latest

Cobscook Bay
2018-07-18 11:00:00 EST
Battery Voltage 12.8 V
CDOM (Water Color) 3.19 QSDE
Chlorophyll a 1.68 µg/L
Conductivity 3.68 S/m
Current Direction 63.9 ENE °
Current Speed 31.4 cm/s
Dissolved O2 6.34 ml/l
Depth (Instrument) 0.811 m
Nitrate Concentration 5.8 µM
PAR(0-) 94.571 µM/m^2/sec
PAR(0+) 922.091 µM/m^2/sec
pH 8.067  
Salinity 31.58 PSU
Temperature 12.38 °C
Transmission 3.165 m-1
Turbidity 2.04 NTU
Latitude 4453.8427 ddmm.m
Longitude 6703.9396 ddmm.m

Machias Bay
2018-07-18 11:00:00 EST
Battery Voltage 12.7 V
CDOM (Water Color) 2.72 QSDE
Chlorophyll a 1.11 µg/L
Conductivity 3.57 S/m
Current Direction 60.9 ENE °
Current Speed 9.3 cm/s
Dissolved O2 6.74 ml/l
Depth (Instrument) 0.792 m
Nitrate Concentration 8.5 µM
PAR(0-) 1794.520 µM/m^2/sec
PAR(0+) 1747.601 µM/m^2/sec
pH 8.020  
Salinity 31.43 PSU
Temperature 11.31 °C
Transmission 1.514 m-1
Turbidity 0.97 NTU
Latitude 4437.0576 ddmm.m
Longitude 6718.9949 ddmm.m

Upper Damariscotta Estuary
2018-07-18 11:00:00 EST
Battery Voltage 12.6 V
CDOM (Water Color) 5.72 QSDE
Chlorophyll a 0.94 µg/L
Conductivity 4.40 S/m
Current Direction 7.1 N °
Current Speed 6.4 cm/s
Dissolved O2 3.89 ml/l
Depth (Instrument) 0.695 m
Nitrate Concentration 2.3 µM
PAR(0-) 1191.473 µM/m^2/sec
PAR(0+) 1769.524 µM/m^2/sec
pH 7.706  
Salinity 30.64 PSU
Temperature 21.58 °C
Transmission 15.270 m-1
Turbidity 16.35 NTU
Latitude 4359.8907 ddmm.m
Longitude 6932.5516 ddmm.m

Western Passage / Passamaquoddy Bay
2018-07-18 11:00:00 EST
Battery Voltage 12.7 V
CDOM (Water Color) 2.77 QSDE
Chlorophyll a 0.85 µg/L
Conductivity 3.61 S/m
Current Direction 222.7 SW °
Current Speed 47.9 cm/s
Dissolved O2 6.17 ml/l
Depth (Instrument) 0.819 m
Nitrate Concentration 3.9 µM
PAR(0-) 626.681 µM/m^2/sec
PAR(0+) 1159.139 µM/m^2/sec
pH 7.978  
Salinity 31.55 PSU
Temperature 11.62 °C
Transmission N/A m-1
Turbidity 1.13 NTU
Latitude 4455.2129 ddmm.m
Longitude 6659.7720 ddmm.m

Google Earth Feed  WAP Feed

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://maine.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:

ParameterDescription
min_datefirst day of data query in format [YYYYMMDD]
max_datelast day of data query in format [YYYYMMDD]
ycomma-separated list of measurement names for dependent variable(s)
data_formatrequired to be 'text' for text output

Rather than specific min_date and max_date, there are two alternate date selectors:

ParameterDescription
days=nthe most recent n days from today
newest=nthe most recent n measurements

The following are examples of commonly used measurement names for the 'y=' independent variable list:

NameDescription
cdomcolored dissolved organic matter
conductivityconductivity
oxygendissolved oxygen
fluorescencefluorescence
nitratenitrate concentration
oxygen_satoxygen saturation
voltagepower supply voltage
salinitysalinity
scatteringscattering coeff
temperaturewater temperature
turbidityturbidity

The names of other measurement items and node identifiers can be found by examining the URL after producing a plot then using the Permalink button. Users with full management access can list all items in the system configuration tools. Note that only one node may be selected per data download.

ParameterDescription
nodesite selection

As mentioned above for measurement names; use the Permalink URL from a plot to determine the numeric site identification for use in the value of a "node=" parameter. Note that unlike data plots which can display multiple sites simultaneously, data download is one site at a time.

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.

Example

For example, if you want to retrieve salinity and nitrate for July 28, 2016 to August 2, 2016 (inclusive) at the example site the URL would be:

http://maine.loboviz.com/cgi-data/nph-data.cgi?min_date=20160628&max_date=20160702&y=salinity,nitrate&data_format=text&node=66

Click the above URL to see the tab-separated text data returned by the server.

Another example, the 12 most recent temperature measurements:

http://maine.loboviz.com/cgi-data/nph-data.cgi?newest=12&y=temperature&data_format=text&node=66

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.