id	keyword
hungeobull-2901	groundwater
hungeobull-2901	level
hungeobull-2901	tisza
hungeobull-2901	groundwater level
hungeobull-2901	danube
hungeobull-2901	data
hungeobull-2901	range
hungeobull-2901	monitoring
hungeobull-2901	interfl
hungeobull-2901	uve
hungeobull-2901	areas
hungeobull-2901	kovács
hungeobull-2901	sampling
hungeobull-2901	case
hungeobull-2901	network
hungeobull-2901	number