datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,07 0:30:00,27 ,       0,       0,       0,       0
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,       0,       0
sgpcmbeC1.c1,2006,07 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 5:30:00,27 ,2.632254,  22.534,11.87286,4.897093
sgpcmbeC1.c1,2006,07 6:30:00,27 ,8.478833,249.4003,26.22222,45.45533
sgpcmbeC1.c1,2006,07 7:30:00,27 ,4.435315,74.86107,20.82642,19.60503
sgpcmbeC1.c1,2006,07 8:30:00,27 ,1.740164,83.05793,19.84059,23.03348
sgpcmbeC1.c1,2006,07 9:30:00,28 ,1.363518,102.9561,25.47118,33.49075
sgpcmbeC1.c1,2006,0710:30:00,28 ,1.015429,72.32542,18.91743,21.41036
sgpcmbeC1.c1,2006,0711:30:00,28 ,1.081012,154.2688,26.57782,37.43179
sgpcmbeC1.c1,2006,0712:30:00,28 ,2.257448,183.5453,41.87808, 47.8072
sgpcmbeC1.c1,2006,0713:30:00,28 ,1.096597,214.0578,40.86654,54.14156
sgpcmbeC1.c1,2006,0714:30:00,28 ,1.366045,159.2909,41.30987,48.03105
sgpcmbeC1.c1,2006,0715:30:00,28 ,2.321533,68.24299,21.92026, 21.2441
sgpcmbeC1.c1,2006,0716:30:00,28 ,4.413049,88.79158,21.08602, 20.8536
sgpcmbeC1.c1,2006,0717:30:00,28 ,3.778541,94.69743,16.63794,18.25641
sgpcmbeC1.c1,2006,0718:30:00,28 ,7.664154,32.82288,14.26772,6.616103
sgpcmbeC1.c1,2006,0719:30:00,28 ,1.886804,44.75334,13.73651,7.438306
sgpcmbeC1.c1,2006,0720:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0721:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0722:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0723:30:00,27 ,       0,       0,       0,       0