datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,07 5:30:00,31 ,       0,18.83645,9.475298,5.034889
sgpcmbeC1.c1,1999,07 6:30:00,31 ,       0,88.82137,56.19424,18.65347
sgpcmbeC1.c1,1999,07 7:30:00,31 ,2.171463,196.4446,105.0987,42.44415
sgpcmbeC1.c1,1999,07 8:30:00,31 ,19.60344,300.9449,131.2377,54.02435
sgpcmbeC1.c1,1999,07 9:30:00,31 ,86.33362,417.3139,152.6018,69.94682
sgpcmbeC1.c1,1999,0710:30:00,31 ,93.99105,471.9059,180.3497,102.9236
sgpcmbeC1.c1,1999,0711:30:00,31 ,96.49184,540.9033,191.4502,112.6527
sgpcmbeC1.c1,1999,0712:30:00,31 ,100.6486,541.7398,202.2188,94.47166
sgpcmbeC1.c1,1999,0713:30:00,31 ,117.5052,493.6821,209.1817,85.78778
sgpcmbeC1.c1,1999,0714:30:00,31 ,116.7547,435.4487,199.6238,79.09648
sgpcmbeC1.c1,1999,0715:30:00,31 ,102.5725,393.0276,176.0207, 69.1844
sgpcmbeC1.c1,1999,0716:30:00,31 ,93.62835,341.9463,144.8372,46.98907
sgpcmbeC1.c1,1999,0717:30:00,31 ,76.56078, 219.022,110.5109,30.53036
sgpcmbeC1.c1,1999,0718:30:00,31 ,41.65627,104.5091,65.75654,  12.842
sgpcmbeC1.c1,1999,0719:30:00,31 ,3.112658,31.09467,17.48567,6.119563
sgpcmbeC1.c1,1999,0720:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0723:30:00,31 ,       0,       0,       0,       0