datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,11 0:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,11 1:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,11 2:30:00,21 ,       0, 0.00013,6.201E-6,0.000028
sgpcmbeC1.c1,2005,11 3:30:00,23 ,       0,0.102595,0.004461,0.021393
sgpcmbeC1.c1,2005,11 4:30:00,23 ,       0,0.223571, 0.00972,0.046618
sgpcmbeC1.c1,2005,11 5:30:00,22 ,       0,0.077409,0.004585,0.017015
sgpcmbeC1.c1,2005,11 6:30:00,25 ,       0,0.339464,0.033462,0.090473
sgpcmbeC1.c1,2005,11 7:30:00,30 ,0.323007,23.40634,11.54112,6.200838
sgpcmbeC1.c1,2005,11 8:30:00,30 ,3.497191,70.93156, 52.5813,17.29946
sgpcmbeC1.c1,2005,11 9:30:00,30 ,5.726337,112.0606,84.83933,27.64363
sgpcmbeC1.c1,2005,1110:30:00,30 , 12.9924,138.7795,113.1101,31.25684
sgpcmbeC1.c1,2005,1111:30:00,30 ,16.19735,155.0402,132.8645,29.66045
sgpcmbeC1.c1,2005,1112:30:00,30 ,22.47793, 158.587,133.5334,31.57123
sgpcmbeC1.c1,2005,1113:30:00,30 ,23.43246, 180.119,127.6204,30.76474
sgpcmbeC1.c1,2005,1114:30:00,30 ,23.00831, 126.219,103.4808,27.25652
sgpcmbeC1.c1,2005,1115:30:00,30 ,14.20326,86.34272,69.40446,22.15778
sgpcmbeC1.c1,2005,1116:30:00,30 ,6.746251,42.33212,28.24512, 10.5699
sgpcmbeC1.c1,2005,1117:30:00,30 ,0.096803,6.528718,2.095011,1.520316
sgpcmbeC1.c1,2005,1118:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1119:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1120:30:00,21 ,       0,0.041699,0.001986,0.009099
sgpcmbeC1.c1,2005,1121:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1122:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,1123:30:00,22 ,       0,0.428659,0.019688, 0.09135