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["2014-04-19T22:15:00.000000000",null,279,542.0]
["2014-04-19T22:45:00.000000000",null,277,0.4617901]
["2014-04-19T23:15:00.000000000",null,278,6.079895]
["2014-04-19T23:45:00.000000000",null,279,542.0]