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["2015-02-20T23:00:00.000000000",null,279,1024.0]
["2015-02-20T23:15:00.000000000",null,279,1024.0]
["2015-02-20T23:30:00.000000000",null,277,0.4737856]
["2015-02-20T23:45:00.000000000",null,278,6.219219]