datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,04 0:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 1:30:00,19 ,       0,0.202533, 0.01066,0.046464
sgpcmbeC1.c1,1999,04 2:30:00,19 ,       0,0.187684,0.009878,0.043058
sgpcmbeC1.c1,1999,04 3:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 4:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 5:30:00,19 ,       0,0.182619,0.023186,0.055378
sgpcmbeC1.c1,1999,04 6:30:00,19 ,0.004465,40.65837,17.69427,15.31372
sgpcmbeC1.c1,1999,04 7:30:00,19 ,0.047743,84.41774,36.07915,28.65168
sgpcmbeC1.c1,1999,04 8:30:00,18 ,0.048407, 102.011,49.78955,28.72518
sgpcmbeC1.c1,1999,04 9:30:00,18 ,       0,161.2523,64.16061,43.62778
sgpcmbeC1.c1,1999,0410:30:00,18 ,0.113886,225.0133,71.56844,73.43394
sgpcmbeC1.c1,1999,0411:30:00,18 ,       0,335.1833,77.11921,94.40465
sgpcmbeC1.c1,1999,0412:30:00,18 ,0.930479, 387.693,80.73436,109.6548
sgpcmbeC1.c1,1999,0413:30:00,18 ,0.225136,375.0674,77.25287,102.0367
sgpcmbeC1.c1,1999,0414:30:00,18 ,       0,326.2383,87.85111,90.33801
sgpcmbeC1.c1,1999,0415:30:00,18 ,0.186507,258.4989,93.75789, 76.6342
sgpcmbeC1.c1,1999,0416:30:00,18 ,       0,125.2185,66.23651,37.50818
sgpcmbeC1.c1,1999,0417:30:00,18 , 0.00596,97.18301,39.08384,27.96578
sgpcmbeC1.c1,1999,0418:30:00,18 ,       0,37.70697,15.97428,14.69883
sgpcmbeC1.c1,1999,0419:30:00,18 ,       0,0.711244,0.073797,0.170759
sgpcmbeC1.c1,1999,0420:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0421:30:00,18 ,       0,0.117663,0.006537,0.027733
sgpcmbeC1.c1,1999,0422:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0423:30:00,18 ,       0,       0,       0,       0