.

Map[Flatten[{StringDrop[#[[1]], -1], #[[2]], ToExpression[Drop[#, 2]]}] &, 
 StringSplit[Rest[StringSplit[StringReplace[Import["testdata.txt"], "," -> "."], "\n"]], "\t"]]

Perhaps a little format hacking is in order

In[1]:= Map[Flatten[{DateString[AbsoluteTime[First[#]]], ToExpression[Rest[#]]}] &, 
    StringSplit[Rest[StringSplit[StringReplace[Import["testdata.txt"], "," -> "."], "\n"]], "\t"]]

Out[1]= {
   {"Thu 1 Jan 2015 00:00:00", 37, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 74, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 111, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 148, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 37, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 74, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 111, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 148, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 185, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 222, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:00", 259, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:01", 296, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:02", 333, 32.17, 34.96},
   {"Thu 1 Jan 2015 00:00:03", 370, 32.17, 34.96}}

I'm not exactly certain how you want to apply the data, but perhaps with a little study you can see how to adapt this.

If that isn't enough then perhaps you can show one line of input and the needed output form of that.