http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.disit.org/km4city/schema#DeviceAttribute
http://www.disit.org/km4city/schema#data_type
float
http://www.disit.org/km4city/schema#value_type
http://www.disit.org/km4city/resource/value_type/snow
http://www.disit.org/km4city/schema#value_name
snow3h
http://www.disit.org/km4city/schema#value_unit
cm
http://www.disit.org/km4city/schema#value_refresh_rate
10800
http://www.disit.org/km4city/schema#healthiness_criteria
refresh_rate