PERIOD PERIOD WTEXT 20 false true false http://mapfw.tangshannanhu.com/iserver/services/data-China400/rest/data/datasources/China/datasets/Main_River_ln/fields/PERIOD/MAX http://mapfw.tangshannanhu.com/iserver/services/data-China400/rest/data/datasources/China/datasets/Main_River_ln/fields/PERIOD/MIN http://mapfw.tangshannanhu.com/iserver/services/data-China400/rest/data/datasources/China/datasets/Main_River_ln/fields/PERIOD/AVERAGE http://mapfw.tangshannanhu.com/iserver/services/data-China400/rest/data/datasources/China/datasets/Main_River_ln/fields/PERIOD/STDDEVIATION http://mapfw.tangshannanhu.com/iserver/services/data-China400/rest/data/datasources/China/datasets/Main_River_ln/fields/PERIOD/SUM http://mapfw.tangshannanhu.com/iserver/services/data-China400/rest/data/datasources/China/datasets/Main_River_ln/fields/PERIOD/VARIANCE