datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,07 0:30:00,27 ,       0,0.002761,0.000102,0.000531
sgpcmbeC1.c1,2006,07 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 3:30:00,27 ,       0,0.193195,0.007155, 0.03718
sgpcmbeC1.c1,2006,07 4:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 5:30:00,27 ,0.348636, 8.84627,4.582082,2.236487
sgpcmbeC1.c1,2006,07 6:30:00,27 ,1.961841,26.95738, 13.1865, 5.62905
sgpcmbeC1.c1,2006,07 7:30:00,27 ,1.155466,33.03655,14.24728,6.328686
sgpcmbeC1.c1,2006,07 8:30:00,28 ,3.818133,43.34702,13.34262,9.528098
sgpcmbeC1.c1,2006,07 9:30:00,28 ,5.933261,58.87421,15.59703,13.26322
sgpcmbeC1.c1,2006,0710:30:00,28 ,2.894677,48.27343,9.603287,10.08627
sgpcmbeC1.c1,2006,0711:30:00,28 ,1.366075,53.71299,14.58597,  17.598
sgpcmbeC1.c1,2006,0712:30:00,28 ,0.664426,61.50098,22.05229,19.87096
sgpcmbeC1.c1,2006,0713:30:00,28 ,2.009623,78.57812,24.09044,23.41522
sgpcmbeC1.c1,2006,0714:30:00,28 ,2.842216,54.24724, 22.1358,19.85085
sgpcmbeC1.c1,2006,0715:30:00,28 ,4.632456,51.59869,19.74874,16.88684
sgpcmbeC1.c1,2006,0716:30:00,28 ,4.903858,38.82132,15.52098,9.606047
sgpcmbeC1.c1,2006,0717:30:00,28 ,3.712562,31.09178,14.76135,6.518706
sgpcmbeC1.c1,2006,0718:30:00,28 ,2.309955,21.76236,12.93707,4.277586
sgpcmbeC1.c1,2006,0719:30:00,28 ,0.214287,13.81071,6.233808,2.968017
sgpcmbeC1.c1,2006,0720:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0721:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0722:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0723:30:00,27 ,       0,       0,       0,       0