datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,01 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 3:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 4:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 6:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,01 7:30:00,31 ,       0,9.572091,3.500913,2.509616
sgpcmbeC1.c1,2004,01 8:30:00,31 ,3.505718,33.98866, 14.0504,7.974028
sgpcmbeC1.c1,2004,01 9:30:00,31 ,3.083097,   44.98, 14.3511,12.64005
sgpcmbeC1.c1,2004,0110:30:00,31 ,1.325844,47.77391,15.49869,14.02984
sgpcmbeC1.c1,2004,0111:30:00,31 ,0.804445,82.25013,20.06159,20.74095
sgpcmbeC1.c1,2004,0112:30:00,31 , 0.44095,83.84187,20.42643,20.85699
sgpcmbeC1.c1,2004,0113:30:00,31 ,0.837981,56.87495,17.70296,15.45702
sgpcmbeC1.c1,2004,0114:30:00,31 , 1.27604,46.75398,16.89939,15.55887
sgpcmbeC1.c1,2004,0115:30:00,31 ,2.047848,50.82831,13.05006,12.20749
sgpcmbeC1.c1,2004,0116:30:00,31 ,5.032121,38.11933,14.77464,9.258736
sgpcmbeC1.c1,2004,0117:30:00,31 , 2.71043,15.48428,8.335294,3.690847
sgpcmbeC1.c1,2004,0118:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0120:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0121:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0122:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0123:30:00,29 ,       0,       0,       0,       0