{"type": "object", "properties": {"CONTRACTYEAR": {"type": "integer", "examples": ["1998", "2021"], "minimum": 0, "maximum": 340282366920938463463374607431768211455, "description": "AEMO Contract Year number starting in week containing 1st January"}, "EFFECTIVEDATE": {"type": "string", "examples": ["1998/07/01 00:00:00"], "format": "date-time", "description": "Calendar settlement date record becomes effective"}, "VERSIONNO": {"type": "integer", "examples": ["1", "2"], "minimum": 0, "maximum": 65535, "description": "Version no of the record for the given effective date"}, "AUTHORISEDBY": {"type": "string", "examples": ["HAMISH", "JWORMALD", "LLITTLEMOR", "SBUGGY", "SCOTT", "SRAJU", "WING"], "description": "Who authorised"}, "AUTHORISEDDATE": {"type": "string", "examples": ["1998/03/29 00:00:00"], "format": "date-time", "description": "Authorised date"}, "LASTCHANGED": {"type": "string", "examples": ["2002/01/10 17:47:07"], "format": "date-time", "description": "Last date and time record changed"}, "RAR1": {"type": "number", "examples": ["0", "2"], "description": "Smelter rate 1"}, "RAR2": {"type": "number", "examples": ["2.08", "0", "2.45"], "description": "Smelter rate 2"}}, "required": ["CONTRACTYEAR", "EFFECTIVEDATE", "VERSIONNO"], "description": "BILLSMELTERRATE is standing data, setting out the rates used in smelter reduction calculations.\nBILLSMELTERRATE is public data, and is available to all participants.\n\nSource\n\nBILLSMELTERRATE updates infrequently, when inserting new annual rates.\n\nVolume\n\nTwo records inserted per year"}