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["2012-09-14T23:00:00.000000000",null,3023,0.086]
["2012-09-14T23:15:00.000000000",null,3024,208.0]
["2012-09-14T23:30:00.000000000",null,3025,0.4]
["2012-09-14T23:45:00.000000000",null,3023,0.086]