#Data Structure Definitions:
data_structure = {}
data_structure['SDS'] = "YEAR/NET/STA/CHAN.TYPE/NET.STA.LOC.CHAN.TYPE.YEAR.DAY"
data_structure['BUD'] = "NET/STA/STA.NET.LOC.CHAN.YEAR.DAY"
data_structure['IDDS'] = "YEAR/NET/STA/CHAN.TYPE/DAY/NET.STA.LOC.CHAN.TYPE.YEAR.DAY.HOUR"
data_structure['PDF'] = "YEAR/STA/CHAN.TYPE/NET.STA.LOC.CHAN.TYPE.YEAR.DAY"
