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exchangeRate: '1', month: 'May 2018', shortmonth: 'May 2018' }, 'NG*6': { name: 'Natural Gas', flag: '', price_2_close: '2.618', open_interest: '44215', tradetime: '20171217204704', symbol: 'NGM18', open: '2.643', high: '2.643', low: '2.626', last: '2.633', rawLast: '2.633', change: '0.015', pctchange: '0.57', volume: '129', exchange: 'NYMEX', type: '2', unitcode: '3', date: '1513576800', lastupdate: '1513566829', previous: '2.618', displaytime: '1513565224', timestamp: '20171217204704', day: 'H', basecode: 'B', ddfexchange: 'J', pointvalue: '10000.0', mode: 'i', bid: '2.632', bidsize: '4', ask: '2.635', asksize: '5', session_id: 'combined', session: 'G', ticktype: '-', settlement: '0', ysettlement: '2.618', yvolume: '12196', tradesize: '1', pchange: '+0.57%', openinterest: '44215', changedir: 'up', exchangeRate: '1', month: 'June 2018', shortmonth: 'Jun 2018' }, 'NG*7': { name: 'Natural Gas', flag: '', price_2_close: '2.657', open_interest: '47353', tradetime: '20171217170546', 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