datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,01 0:30:00,8 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 1:30:00,9 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 2:30:00,8 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 3:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 4:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 5:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 7:30:00,31 ,       0,4.427386,1.347302,1.052495
sgpcmbeC1.c1,2001,01 8:30:00,31 ,       0,70.01592,27.80313,17.05816
sgpcmbeC1.c1,2001,01 9:30:00,31 ,2.389272,193.7963,66.00887, 46.8087
sgpcmbeC1.c1,2001,0110:30:00,31 ,  4.4155,303.5508,99.33061,76.95174
sgpcmbeC1.c1,2001,0111:30:00,31 ,6.689202,374.3174,120.8902,91.88202
sgpcmbeC1.c1,2001,0112:30:00,31 ,7.412293,397.5572,126.7454,96.03206
sgpcmbeC1.c1,2001,0113:30:00,31 ,8.571625,400.5719, 121.732,92.53904
sgpcmbeC1.c1,2001,0114:30:00,31 ,9.122336,299.6217,105.7862,73.28332
sgpcmbeC1.c1,2001,0115:30:00,31 ,6.166774,203.1092,72.23743,45.84229
sgpcmbeC1.c1,2001,0116:30:00,31 ,2.136372,87.28589,34.20969,20.09133
sgpcmbeC1.c1,2001,0117:30:00,31 ,       0,16.62513,5.273409,4.180758
sgpcmbeC1.c1,2001,0118:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0120:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0121:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0122:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0123:30:00,10 ,       0,       0,       0,       0