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 ,0.176162,9.452026,3.785651,2.376675
sgpcmbeC1.c1,2006,07 6:30:00,27 ,4.521615,50.70723,33.90553, 12.6561
sgpcmbeC1.c1,2006,07 7:30:00,27 ,14.01784,90.68372,71.65204,23.05999
sgpcmbeC1.c1,2006,07 8:30:00,28 , 27.4096,132.3156,105.5564,29.96088
sgpcmbeC1.c1,2006,07 9:30:00,28 ,27.06265, 163.649,128.7553,38.36987
sgpcmbeC1.c1,2006,0710:30:00,28 ,12.09294,176.5027,145.5886,46.17067
sgpcmbeC1.c1,2006,0711:30:00,28 , 19.8521,184.8213,153.0089,44.47233
sgpcmbeC1.c1,2006,0712:30:00,28 ,22.09326,190.8635, 160.996,35.29307
sgpcmbeC1.c1,2006,0713:30:00,28 ,20.43328,191.3009,150.3801,44.71687
sgpcmbeC1.c1,2006,0714:30:00,28 ,44.73885,177.2883,140.6364,41.97744
sgpcmbeC1.c1,2006,0715:30:00,28 ,23.54342,  155.67,131.6664,34.21167
sgpcmbeC1.c1,2006,0716:30:00,28 , 25.2371,133.2141,108.9276, 28.3913
sgpcmbeC1.c1,2006,0717:30:00,28 , 12.2029,93.82024,77.95329, 20.4746
sgpcmbeC1.c1,2006,0718:30:00,28 ,3.129271,56.53996,39.23671,12.84983
sgpcmbeC1.c1,2006,0719:30:00,28 ,0.065049,14.58716,6.193163,3.267423
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