datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 5:30:00,30 ,       0,12.70718,2.122498,3.088845
sgpcmbeC1.c1,2002,05 6:30:00,31 ,0.001555,131.2519,34.58423,43.57643
sgpcmbeC1.c1,2002,05 7:30:00,31 ,       0,311.9593,123.7322,112.0711
sgpcmbeC1.c1,2002,05 8:30:00,31 ,0.006081,497.9724,194.6321,200.7321
sgpcmbeC1.c1,2002,05 9:30:00,31 ,0.169403,684.3422,270.8431,254.5005
sgpcmbeC1.c1,2002,0510:30:00,31 , 1.10994,824.7546,352.6733,330.5459
sgpcmbeC1.c1,2002,0511:30:00,31 ,0.181191,915.5298,424.6557, 370.787
sgpcmbeC1.c1,2002,0512:30:00,31 ,0.417748,944.3613,384.3441,378.9626
sgpcmbeC1.c1,2002,0513:30:00,31 ,0.074921,911.0715,379.8919,365.4831
sgpcmbeC1.c1,2002,0514:30:00,31 ,0.170349,821.8651,393.9538,325.7517
sgpcmbeC1.c1,2002,0515:30:00,31 ,0.000404,674.0728,326.9403,274.1155
sgpcmbeC1.c1,2002,0516:30:00,31 ,0.062195,490.8787,229.8228,196.9429
sgpcmbeC1.c1,2002,0517:30:00,31 ,       0,298.2627,142.7767,110.0175
sgpcmbeC1.c1,2002,0518:30:00,31 ,       0,117.0021,37.87946,39.04065
sgpcmbeC1.c1,2002,0519:30:00,31 ,       0,9.266138,1.429638,2.380171
sgpcmbeC1.c1,2002,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0522:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0523:30:00,30 ,       0,       0,       0,       0