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 ,1.614883,28.10749,10.89224,6.115091
sgpcmbeC1.c1,2006,07 6:30:00,27 ,21.98061,  133.69,66.23807,24.84879
sgpcmbeC1.c1,2006,07 7:30:00,27 ,63.53914,316.0074,123.8707,58.04851
sgpcmbeC1.c1,2006,07 8:30:00,27 ,76.68999,288.4212,154.7111, 64.3401
sgpcmbeC1.c1,2006,07 9:30:00,28 ,84.03355,463.4709,189.8162,107.5527
sgpcmbeC1.c1,2006,0710:30:00,28 ,67.51019, 550.451,199.5182,119.5703
sgpcmbeC1.c1,2006,0711:30:00,28 ,89.96946,609.3103,227.5175,147.3452
sgpcmbeC1.c1,2006,0712:30:00,28 ,91.40803,603.5735,243.7618,133.8247
sgpcmbeC1.c1,2006,0713:30:00,28 ,92.34476,538.7084,226.3354,117.0608
sgpcmbeC1.c1,2006,0714:30:00,28 ,91.89957,382.4766,205.5257,77.35803
sgpcmbeC1.c1,2006,0715:30:00,28 ,89.90995,326.4275,175.0446,63.82896
sgpcmbeC1.c1,2006,0716:30:00,28 ,78.03989,270.0219,151.4494, 47.4907
sgpcmbeC1.c1,2006,0717:30:00,28 ,58.19851,195.9808,108.8485,  33.976
sgpcmbeC1.c1,2006,0718:30:00,28 ,14.29046,122.6286,64.21861,21.20555
sgpcmbeC1.c1,2006,0719:30:00,28 ,0.985252,48.66585,15.46802,8.437857
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