datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,07 0:30:00,30 ,       0,0.611878,0.020396,0.111713
sgpcmbeC1.c1,2004,07 1:30:00,30 ,       0, 1.08392,0.065233,0.223242
sgpcmbeC1.c1,2004,07 2:30:00,30 ,       0,1.365468, 0.08374,0.319975
sgpcmbeC1.c1,2004,07 3:30:00,30 ,       0, 1.05138,0.035046,0.191955
sgpcmbeC1.c1,2004,07 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,07 5:30:00,30 ,1.456387,19.71471,9.137178,4.321578
sgpcmbeC1.c1,2004,07 6:30:00,30 ,4.782442,65.03645,20.14036,12.00716
sgpcmbeC1.c1,2004,07 7:30:00,30 ,3.844224,68.60478,18.00536,15.04435
sgpcmbeC1.c1,2004,07 8:30:00,30 ,2.777292,91.68722, 29.1211,26.27578
sgpcmbeC1.c1,2004,07 9:30:00,30 ,1.832923,89.54271,25.47157,22.66915
sgpcmbeC1.c1,2004,0710:30:00,30 , 0.76412,141.5203,28.80816,32.98683
sgpcmbeC1.c1,2004,0711:30:00,31 ,0.954395,112.5327,31.84977,30.38091
sgpcmbeC1.c1,2004,0712:30:00,31 ,1.451236,170.9142,39.29552,36.54467
sgpcmbeC1.c1,2004,0713:30:00,31 ,2.034077,177.9318,39.66983,40.09426
sgpcmbeC1.c1,2004,0714:30:00,31 ,1.093917,116.3949,37.48984,29.96248
sgpcmbeC1.c1,2004,0715:30:00,31 ,2.312959,121.7243,26.95505, 25.0227
sgpcmbeC1.c1,2004,0716:30:00,31 ,1.477635,95.19618,25.43702,  23.347
sgpcmbeC1.c1,2004,0717:30:00,31 ,4.274745,72.20998,16.37893,12.53491
sgpcmbeC1.c1,2004,0718:30:00,31 ,4.532548,43.67336,15.57627,8.758394
sgpcmbeC1.c1,2004,0719:30:00,31 ,2.119432,25.17192,14.62164,5.064909
sgpcmbeC1.c1,2004,0720:30:00,31 ,       0,1.169466,0.095116,0.298403
sgpcmbeC1.c1,2004,0721:30:00,31 ,       0,0.294295,0.009493,0.052857
sgpcmbeC1.c1,2004,0722:30:00,31 ,       0,0.843377,0.027206,0.151475
sgpcmbeC1.c1,2004,0723:30:00,31 ,       0,0.651256,0.021008,0.116969