datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,04 0:30:00,30 ,       0,1.767437, 0.41396, 0.59664
sgpcmbeC1.c1,2005,04 1:30:00,30 ,       0,1.775704,0.367372,0.587709
sgpcmbeC1.c1,2005,04 2:30:00,30 ,       0,1.688811,0.300621,0.546708
sgpcmbeC1.c1,2005,04 3:30:00,30 ,       0,1.269387,0.197943,0.451186
sgpcmbeC1.c1,2005,04 4:30:00,30 ,       0,1.611615,0.141903,0.366238
sgpcmbeC1.c1,2005,04 5:30:00,30 ,       0,10.83255,2.707912,2.936499
sgpcmbeC1.c1,2005,04 6:30:00,30 , 3.06565, 60.2625,36.05359,18.35442
sgpcmbeC1.c1,2005,04 7:30:00,30 ,4.550889,84.41299,52.56087,21.75048
sgpcmbeC1.c1,2005,04 8:30:00,30 ,17.19697,196.5894,79.96178,43.87037
sgpcmbeC1.c1,2005,04 9:30:00,30 , 29.3424,201.8143,84.16153,51.92548
sgpcmbeC1.c1,2005,0410:30:00,30 ,7.016115,259.3705,94.52368,76.48241
sgpcmbeC1.c1,2005,0411:30:00,30 ,17.15983,257.0386,102.9525,84.45456
sgpcmbeC1.c1,2005,0412:30:00,30 ,2.439453, 307.474,132.7245, 107.232
sgpcmbeC1.c1,2005,0413:30:00,30 ,16.91523,343.5709,119.6855, 97.2751
sgpcmbeC1.c1,2005,0414:30:00,30 ,22.38296,283.0683,94.19951,64.78709
sgpcmbeC1.c1,2005,0415:30:00,30 ,8.981257,237.7572,93.39292,57.79577
sgpcmbeC1.c1,2005,0416:30:00,30 ,41.76556,210.0589, 90.0338,40.20198
sgpcmbeC1.c1,2005,0417:30:00,30 ,19.61591,118.8703,62.54257, 24.0514
sgpcmbeC1.c1,2005,0418:30:00,30 ,5.717977,74.68761,36.68393,18.14342
sgpcmbeC1.c1,2005,0419:30:00,30 ,       0, 9.50508,2.697704,2.209328
sgpcmbeC1.c1,2005,0420:30:00,30 ,       0,1.696218,0.381198,0.663297
sgpcmbeC1.c1,2005,0421:30:00,30 ,       0,1.822227,0.486383,0.733094
sgpcmbeC1.c1,2005,0422:30:00,30 ,       0,1.800842,0.463906,0.651852
sgpcmbeC1.c1,2005,0423:30:00,30 ,       0,1.901427,0.310334, 0.56387