datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 1:30:00,31 ,       0,0.006915,0.000223,0.001242
sgpcmbeC1.c1,2003,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,07 3:30:00,31 ,       0,0.157493,0.009577,0.037146
sgpcmbeC1.c1,2003,07 4:30:00,31 ,       0,0.771315,0.030845,0.141376
sgpcmbeC1.c1,2003,07 5:30:00,31 ,       0,9.624145,4.465029,2.492323
sgpcmbeC1.c1,2003,07 6:30:00,31 ,1.877322,23.11416,12.86334,4.245555
sgpcmbeC1.c1,2003,07 7:30:00,31 ,5.536461,37.37127,17.29826,7.423671
sgpcmbeC1.c1,2003,07 8:30:00,31 ,5.647948,46.62725,14.58627,9.093588
sgpcmbeC1.c1,2003,07 9:30:00,31 ,5.614932,49.28464,15.11626,13.43932
sgpcmbeC1.c1,2003,0710:30:00,31 ,3.383303,66.22816,13.96345,15.88826
sgpcmbeC1.c1,2003,0711:30:00,31 ,1.504522,64.14852,17.24821,20.39807
sgpcmbeC1.c1,2003,0712:30:00,31 ,0.636042,  63.752,17.75268,22.48103
sgpcmbeC1.c1,2003,0713:30:00,31 ,0.845933,88.68724, 28.8518, 27.2773
sgpcmbeC1.c1,2003,0714:30:00,31 ,2.564606,85.07648,32.69628,26.36858
sgpcmbeC1.c1,2003,0715:30:00,31 ,5.612203,61.53914,  25.587,19.53207
sgpcmbeC1.c1,2003,0716:30:00,31 ,7.994103,73.09138,21.38169,17.73062
sgpcmbeC1.c1,2003,0717:30:00,31 , 7.34682,45.20271,17.13342,8.761865
sgpcmbeC1.c1,2003,0718:30:00,31 ,3.981112,27.95013,15.20963,5.201849
sgpcmbeC1.c1,2003,0719:30:00,31 ,1.503156,10.44285,6.484329,2.461786
sgpcmbeC1.c1,2003,0720:30:00,31 ,       0,0.409295,0.015408,0.074125
sgpcmbeC1.c1,2003,0721:30:00,31 ,       0,0.118402,0.003819,0.021266
sgpcmbeC1.c1,2003,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0723:30:00,31 ,       0,       0,       0,       0