Here is the contents of one of those files

20130102,855,35.49,35.49,35.49,35.49,217,1,0,0
20130102,905,34.57,34.6,34.57,34.6,300,1,0,0
20130102,915,34.7,34.7,34.7,34.7,27092,1,0,0
20130102,925,34.66,34.71,34.62,34.62,1800,1,0,0
20130102,930,34.92,34.92,34.4,34.62,192824,1,0,0
20130102,935,34.7563,34.86,34.625,34.81,132380,1,0,0
20130102,940,34.805,35.2,34.805,35.2,79402,1,0,0
20130102,945,35.2,35.2,34.8,34.95,316021,1,0,0
20130102,950,34.83,34.9463,34.6,34.65,34657,1,0,0
20130102,955,34.639,34.83,34.52,34.72,76530,1,0,0
20130102,1000,34.72,34.72,34.66,34.7,61116,1,0,0
20130102,1005,34.6793,34.6997,34.6,34.6365,159095,1,0,0
20130102,1010,34.6289,34.7,34.49,34.7,153262,1,0,0
20130102,1015,34.6999,34.6999,34.4,34.53,80633,1,0,0
20130102,1020,34.53,34.53,34.48,34.491,101987,1,0,0
20130102,1025,34.495,34.51,34.38,34.39,113451,1,0,0
20130102,1030,34.3862,34.46,34.18,34.29,149975,1,0,0
20130102,1035,34.3,34.36,34.12,34.3201,95972,1,0,0
20130102,1040,34.335,34.37,34.14,34.365,101404,1,0,0
20130102,1045,34.36,34.42,34.36,34.37,135165,1,0,0
20130102,1050,34.37,34.37,34.2,34.281,74406,1,0,0
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20130102,1500,35,35,34.9495,34.9901,77380,1,0,0
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20130102,1510,35.03,35.25,35.03,35.05,103381,1,0,0
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20130102,1540,35.05,35.11,35.04,35.11,188005,1,0,0
20130102,1545,35.1,35.19,35,35,537742,1,0,0
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20130102,1555,35.05,35.4,35,35.3,454502,1,0,0
20130102,1600,35.3,35.3,35.12,35.12,961747,1,0,0
20130102,1605,35.14,35.14,35.12,35.12,60500,1,0,0
20130102,1610,35.12,35.12,35.12,35.12,2717,1,0,0
20130102,1620,35.15,35.15,35.15,35.15,900,1,0,0
20130102,1650,35.12,35.12,35.1,35.1,25047,1,0,0
20130102,1655,35.1,35.12,35.1,35.12,4400,1,0,0
20130102,1710,35.12,35.12,35.12,35.12,600,1,0,0
20130102,1720,35.07,35.07,35.07,35.07,300,1,0,0
20130102,1730,35.1,35.1,35.07,35.1,956,1,0,0
20130102,1740,35.06,35.06,35.06,35.06,125,1,0,0
20130102,1825,35.12,35.12,35.12,35.12,100,1,0,0
20130102,1955,35.04,35.04,35.04,35.04,100,1,0,0