Picton Harbours maintains three Gill GMX500 Maximet Weather Stations in the Marlborough Sounds.
Weather stations are located at:
Weather is forwarded to the Weather Underground, stored in a data warehouse, and provided to partner organisations. Partner feeds are available as NMEA via a UDP stream or TCP server, as XML, or JSON.
NMEA Format
Three sentences are produced once a minute. Each is followed by a CR/LF.
The first line contains the wind bearing, and average speed in knots
The second line contains the IMO three-second maximum gust bearing and speed in knots
The third sentence contains the relative humidity in percent, the temperature in degrees celsius, the barometric pressure in pascals, and the relative humidity as percent.
NMEA format sentence example:
$WIMWV,332.0,T,05.33,N,A*22 $WIMWV,322.0,G,09.22,N,A*3C $WIXDR,H,092,P,RH,C,014.1,C,TEMP,P,1.025,B,PRESS,C,009.9,C,DP*08
JSON Format
{
"sensor_id": "pcn.westhead.gmx500.1",
"timestamp": "2021-12-02T09:43:51Z",
"measurement_id": "0f726c8da32d5720fd6171aedf1c4b46",
"avg_temp": 18.1,
"avg_pressure": 1017.9,
"humidity": 115.0,
"dewpoint": 13.4,
"wind_avg": 1.21,
"wind_dir": 329.0,
"wind_gust": 1.75,
"wind_gust_dir": 319.0
}