datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,07 5:30:00,31 ,       0,25.92638,9.113628,5.307806
sgpcmbeC1.c1,2007,07 6:30:00,31 ,       0, 39.5007,16.82525,9.319754
sgpcmbeC1.c1,2007,07 7:30:00,31 ,5.142083,55.59703,19.98783,15.53614
sgpcmbeC1.c1,2007,07 8:30:00,31 ,1.494181,112.2986,  32.494,34.41693
sgpcmbeC1.c1,2007,07 9:30:00,31 ,1.223304, 106.226,40.50598,34.91453
sgpcmbeC1.c1,2007,0710:30:00,31 ,1.173439,149.4568,47.38715,46.16971
sgpcmbeC1.c1,2007,0711:30:00,31 ,2.220755,138.4704, 60.0287,35.39506
sgpcmbeC1.c1,2007,0712:30:00,31 ,5.986774,154.9711,51.76991, 35.7131
sgpcmbeC1.c1,2007,0713:30:00,31 , 7.83973,141.4351,45.49795,31.92321
sgpcmbeC1.c1,2007,0714:30:00,30 ,4.477825,150.1018,40.91378,33.14671
sgpcmbeC1.c1,2007,0715:30:00,31 ,2.280275,164.9033,39.45544,37.52725
sgpcmbeC1.c1,2007,0716:30:00,31 ,2.624821, 124.345,27.16637,23.83646
sgpcmbeC1.c1,2007,0717:30:00,31 ,3.358626,62.98051,21.59355,15.32135
sgpcmbeC1.c1,2007,0718:30:00,31 ,4.078506,48.36163,20.72895, 12.9149
sgpcmbeC1.c1,2007,0719:30:00,31 ,4.984053,50.05391,14.09007, 7.68053
sgpcmbeC1.c1,2007,0720:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0723:30:00,31 ,       0,       0,       0,       0