datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,07 0:30:00,28 ,       0,247.7603,25.27375,55.30465
sgpcmbeC1.c1,2007,07 1:30:00,28 ,       0,217.4894,29.27275,57.60687
sgpcmbeC1.c1,2007,07 2:30:00,28 ,       0,208.2732,23.44727,42.49543
sgpcmbeC1.c1,2007,07 3:30:00,29 ,       0, 144.237, 20.5123,30.73401
sgpcmbeC1.c1,2007,07 4:30:00,29 ,       0,234.1073,26.68731,46.13976
sgpcmbeC1.c1,2007,07 5:30:00,29 ,0.018375,128.9432, 19.7468,26.86586
sgpcmbeC1.c1,2007,07 6:30:00,28 ,       0,215.3137,46.31689,64.43594
sgpcmbeC1.c1,2007,07 7:30:00,29 , 0.00937,153.4329, 41.9768,47.80471
sgpcmbeC1.c1,2007,07 8:30:00,30 ,0.024009,188.8513,35.66557,47.83031
sgpcmbeC1.c1,2007,07 9:30:00,30 ,       0,160.4148,32.75829, 47.3795
sgpcmbeC1.c1,2007,0710:30:00,30 ,       0,292.3188,44.55688,70.86771
sgpcmbeC1.c1,2007,0711:30:00,29 ,3.061888,277.9045,49.28637,68.44622
sgpcmbeC1.c1,2007,0712:30:00,28 ,1.971675,262.0599,47.10806,66.29887
sgpcmbeC1.c1,2007,0713:30:00,28 ,0.864335,290.7008, 49.1328,68.69966
sgpcmbeC1.c1,2007,0714:30:00,28 ,       0,162.9821,34.19546,44.34133
sgpcmbeC1.c1,2007,0715:30:00,28 ,       0,156.5656,25.01233,39.07007
sgpcmbeC1.c1,2007,0716:30:00,28 ,       0,241.6657,28.09664, 51.3558
sgpcmbeC1.c1,2007,0717:30:00,28 ,       0,285.3315,29.90665,60.22372
sgpcmbeC1.c1,2007,0718:30:00,29 ,       0,180.2218,24.90221,45.43942
sgpcmbeC1.c1,2007,0719:30:00,29 ,       0,234.3761,22.13053,50.51947
sgpcmbeC1.c1,2007,0720:30:00,29 ,       0,126.7557, 19.2799, 31.9555
sgpcmbeC1.c1,2007,0721:30:00,29 ,       0,112.0283,17.84151,27.84756
sgpcmbeC1.c1,2007,0722:30:00,29 ,       0,193.0394,22.76144,41.74604
sgpcmbeC1.c1,2007,0723:30:00,28 ,       0,194.1418,15.73764,36.13664