datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 5:30:00,31 ,       0,3.487763,1.175871,1.018943
sgpcmbeC1.c1,2002,07 6:30:00,31 ,0.064138, 82.1384,41.26017, 27.7927
sgpcmbeC1.c1,2002,07 7:30:00,31 ,0.239655,254.1874,132.1657,89.20147
sgpcmbeC1.c1,2002,07 8:30:00,31 ,0.615669,440.4492,250.9906,162.1758
sgpcmbeC1.c1,2002,07 9:30:00,31 ,2.062195,612.6118,362.8335,224.2877
sgpcmbeC1.c1,2002,0710:30:00,31 ,5.278091,768.9213,446.9387,268.5292
sgpcmbeC1.c1,2002,0711:30:00,31 ,1.587952, 863.761,516.7419,269.4966
sgpcmbeC1.c1,2002,0712:30:00,31 ,0.201477,877.1368,  539.71,289.9886
sgpcmbeC1.c1,2002,0713:30:00,31 , 0.53241,844.8876,480.8612,273.0473
sgpcmbeC1.c1,2002,0714:30:00,31 ,0.830017,769.9636,419.2449,255.7589
sgpcmbeC1.c1,2002,0715:30:00,31 ,2.641876,648.8564,363.9441,203.1127
sgpcmbeC1.c1,2002,0716:30:00,31 ,0.939117,484.7079,276.4404,154.4825
sgpcmbeC1.c1,2002,0717:30:00,31 , 0.38827,296.1106,148.4914,93.56549
sgpcmbeC1.c1,2002,0718:30:00,31 ,       0,123.2792,55.94965,37.77205
sgpcmbeC1.c1,2002,0719:30:00,31 ,       0,11.95021,3.987833,3.727035
sgpcmbeC1.c1,2002,0720:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0723:30:00,31 ,       0,       0,       0,       0