# 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

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
1591255827157,2020-06-04T07:30:27.157000Z,0.012,,5.225,,,-108,23.33,17.62,,,,70B3D57050001AB9
1591255982452,2020-06-04T07:33:02.452000Z,,,5.271,,,-112,25.69,16.25,,,,70B3D57050004FE6
1591256270808,2020-06-04T07:37:50.808000Z,,,5.317,,,-94,9.99,13.31,,,,70B3D57050004DF8
1591256312824,2020-06-04T07:38:32.824000Z,,,5.311,,,-95,21.37,17.25,,,,70B3D57050004E0E
1591256428127,2020-06-04T07:40:28.127000Z,0.012,,5.225,,,-110,23.01,17.62,,,,70B3D57050001AB9
1591256605491,2020-06-04T07:43:25.491000Z,,,5.324,,,-108,19.52,17.12,,,,70B3D57050001BBE
1591257029164,2020-06-04T07:50:29.164000Z,0.012,,5.225,,,-104,22.9,17.56,,,,70B3D57050001AB9
1591257102831,2020-06-04T07:51:42.831000Z,,,5.293,,,-94,18.81,13.37,,,,70B3D57050004D86
1591257279634,2020-06-04T07:54:39.634000Z,,,5.282,,,-100,20.46,15.18,,,,70B3D57050004C07
1591257623515,2020-06-04T08:00:23.515000Z,,,5.337,,,-86,21.01,13.62,,,,70B3D57050004FB9

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 is in json file uiras-meta.json. There is one object for all sensors, like this:

  "70B3D57050004DF8": {
    "name": "Vasikkasaari",
    "lat": 60.1523297,
    "lon": 25.0158648,
    "servicemap_url": "https://palvelukartta.hel.fi/fi/unit/50903",
    "site_url": "https://www.vasikkasaari.org"
  }

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