datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 5:30:00,31 ,       0,12.57951,3.037804,4.134696
sgpcmbeC1.c1,2003,05 6:30:00,31 ,0.021628, 52.4929,20.31034,21.60863
sgpcmbeC1.c1,2003,05 7:30:00,31 ,0.005248,86.68676,33.18609,29.10233
sgpcmbeC1.c1,2003,05 8:30:00,31 ,0.095929,178.5043,44.36872,42.87933
sgpcmbeC1.c1,2003,05 9:30:00,31 ,0.336381, 275.718,71.80774,70.45409
sgpcmbeC1.c1,2003,0510:30:00,31 ,0.660724,290.9215,80.31951, 78.2867
sgpcmbeC1.c1,2003,0511:30:00,31 ,1.407824,328.2724,81.75008,88.61117
sgpcmbeC1.c1,2003,0512:30:00,31 ,1.078188, 283.737,77.57191, 89.1999
sgpcmbeC1.c1,2003,0513:30:00,31 ,0.156116,349.7905,94.38433,110.4824
sgpcmbeC1.c1,2003,0514:30:00,31 ,1.012607,301.1708,100.8509,98.56521
sgpcmbeC1.c1,2003,0515:30:00,31 ,0.173739,254.7964,83.00216,60.82503
sgpcmbeC1.c1,2003,0516:30:00,31 ,       0,189.7047,65.86487,49.16252
sgpcmbeC1.c1,2003,0517:30:00,31 ,  0.0019,115.9514,48.95662,26.17547
sgpcmbeC1.c1,2003,0518:30:00,31 ,       0,54.55961,28.08487,17.22528
sgpcmbeC1.c1,2003,0519:30:00,31 ,       0,9.697515,2.906751,2.940965
sgpcmbeC1.c1,2003,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0522:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0523:30:00,31 ,       0,       0,       0,       0