# UiRaS 2.0 beach water temperature sensor data

This directory contains data of UiRaS (UimaRantaSensori) water temperature
sensors, which are located at several swimming places in Helsinki. 

Data is visualised in 
https://uiras.fvh.io 
and visualisation's source code is in 
https://github.com/ForumViriumHelsinki/UiRas
Site is created using React and Typescript.

All data is downloadable in CSV format (file: uiras-all-data.csv), which looks like this sample below:

time,readable_time,analog1,analog2,batt,lat,lon,rssi,temp_in,temp_out1,temp_out2,temprh_rh,temprh_temp,dev-id
1659689177859,2022-08-05T08:46:17.859000Z,,,5.291,,,-107.0,25.39,21.81,,,,70B3D5705000516A
1659689230608,2022-08-05T08:47:10.608000Z,,,5.346,,,-98.0,34.24,19.81,,,,70B3D5705000E3EF
1659689277289,2022-08-05T08:47:57.289000Z,,,5.326,,,-89.0,29.01,19.43,,,,70B3D5705000E70E
1659689289286,2022-08-05T08:48:09.286000Z,,,5.154,,,-102.0,22.92,17.62,,,,70B3D57050004D86
1659689544350,2022-08-05T08:52:24.350000Z,,,5.308,,,-91.0,30.83,21.68,,,,70B3D5705000E6F9
1659689578402,2022-08-05T08:52:58.402000Z,0.013,,5.183,,,-101.0,32.53,21.75,,,,70B3D57050001AB9
1659689622883,2022-08-05T08:53:42.883000Z,,,5.35,,,-97.0,29.32,20.18,,,,70B3D5705000E3C0
1659689720414,2022-08-05T08:55:20.414000Z,,,3.984,,,-106.0,26.93,17.56,,,,70B3D5705000E6E6
1659689750223,2022-08-05T08:55:50.223000Z,,,5.341,,,-83.0,30.16,22.93,,,,70B3D5705000E653
1659689920219,2022-08-05T08:58:40.219000Z,,,5.297,,,-100.0,23.75,19.12,,,,70B3D57050004FB9

The most interesting columns are: 

readable_time = timestamp with timezone in ISO format
temp_out = temperature probe's reading (water)
dev-id = sensor's identifier

Other columns:

temp_in = internal temperature in sensor case (not very accurate)
temprh_rh,temprh_temp = external air RH and temperature probe data (not widely used)
rssi = LoRaWAN network RSSI, if value is near -120 the network is unreliable

All available metadata and the latest measuremet is in GeoJSON file uiras2_v2.geojson. 
There is one feature for every sensor, like this:

  {
   "type": "Feature",
   "id": "70B3D57050001A97",
   "geometry": {
    "type": "Point",
    "coordinates": [
     24.979968,
     60.180724
    ]
   },
   "properties": {
    "installation depth": -0.4,
    "installation platform": "steps",
    "installation method": "static",
    "name": "Kalasatama",
    "location": "Sompasaarensalmi",
    "district": "S\u00f6rn\u00e4inen (Sompasaari)",
    "created_at": "2022-08-05T08:55:04.113806+00:00",
    "temp_water": 21.0,
    "temp_in": 28.05,
    "battery": 5.297,
    "time": "2022-08-05T08:42:04.341000+00:00",
    "links": {
     "json": {
      "type": "application/json",
      "rel": "data",
      "title": "Data for 2 weeks in JSON format, version 1",
      "href": "70B3D57050001A97_v1.json"
     },
     "geojson": {
      "type": "application/geojson",
      "rel": "data",
      "title": "Data for 7/30/600 days in GeoJSON format, version 2",
      "href": "70B3D57050001A97_v2.geojson"
     }
    }
   }
  }

File uiras2_v2.geojson contains data of last 7/30/600 days and it is used by current https://uiras.fvh.io site.

File uiras2_v1.json contains data of last 2 weeks and it was used by old https://uiras-v1.fvh.io site.