datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,04 0:30:00,29 ,0.192818,421.5294,40.18063,  91.794
sgpcmbeC1.c1,2007,04 1:30:00,29 ,0.061945,320.5429,32.70848,68.90132
sgpcmbeC1.c1,2007,04 2:30:00,29 ,0.001771,465.2383,32.15737,87.83931
sgpcmbeC1.c1,2007,04 3:30:00,29 ,       0,483.7627,34.61916,94.56448
sgpcmbeC1.c1,2007,04 4:30:00,29 ,       0,222.9626,19.98553,43.79784
sgpcmbeC1.c1,2007,04 5:30:00,29 ,0.045886,280.6165,26.12087,57.28056
sgpcmbeC1.c1,2007,04 6:30:00,28 ,       0,147.1557,18.02286,33.09754
sgpcmbeC1.c1,2007,04 7:30:00,29 ,       0,156.0406,18.10839,34.58551
sgpcmbeC1.c1,2007,04 8:30:00,29 ,       0,89.23311,14.95684, 21.0276
sgpcmbeC1.c1,2007,04 9:30:00,29 ,       0,115.1234,19.08263,29.52823
sgpcmbeC1.c1,2007,0410:30:00,29 ,       0,110.8849,22.58012,33.70468
sgpcmbeC1.c1,2007,0411:30:00,29 ,       0,260.2567,30.46261,53.69419
sgpcmbeC1.c1,2007,0412:30:00,30 ,0.075897,205.9106, 36.2756,57.78341
sgpcmbeC1.c1,2007,0413:30:00,30 ,       0,238.6071,39.92926,58.79101
sgpcmbeC1.c1,2007,0414:30:00,29 ,0.111261,129.5289,30.38439,37.92932
sgpcmbeC1.c1,2007,0415:30:00,28 ,       0,277.1823,31.81707,59.67769
sgpcmbeC1.c1,2007,0416:30:00,28 ,       0,203.1833,20.58081,41.00459
sgpcmbeC1.c1,2007,0417:30:00,28 ,       0, 339.869,23.64983,69.12279
sgpcmbeC1.c1,2007,0418:30:00,28 ,0.123076,110.5473,16.53867,33.24397
sgpcmbeC1.c1,2007,0419:30:00,29 ,0.320117,261.2678,24.99786,66.75499
sgpcmbeC1.c1,2007,0420:30:00,29 ,0.034945,344.4033,30.39372,81.63109
sgpcmbeC1.c1,2007,0421:30:00,29 ,0.081375,296.1048,33.96163,80.21999
sgpcmbeC1.c1,2007,0422:30:00,29 ,       0,129.7274,16.05092,33.27669
sgpcmbeC1.c1,2007,0423:30:00,29 , 0.22666,373.0507,39.86551,95.46204