datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,01 0:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 1:30:00,18 ,       0,1.674854,0.093047,0.394767
sgpcmbeC1.c1,2002,01 2:30:00,12 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 3:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 4:30:00,19 ,       0,1.077279,0.056699,0.247145
sgpcmbeC1.c1,2002,01 5:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 6:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 7:30:00,29 ,       0,7.102689,2.006493,  2.1484
sgpcmbeC1.c1,2002,01 8:30:00,29 ,0.079576,54.07748,26.94135,20.09555
sgpcmbeC1.c1,2002,01 9:30:00,29 ,0.043783,63.70258,33.69407,21.48188
sgpcmbeC1.c1,2002,0110:30:00,29 , 0.13249, 145.209,54.07889,38.35581
sgpcmbeC1.c1,2002,0111:30:00,28 ,0.225289,172.4141,64.09987,54.92358
sgpcmbeC1.c1,2002,0112:30:00,29 ,0.328877,205.9439,61.18912,67.03288
sgpcmbeC1.c1,2002,0113:30:00,29 ,0.443408,206.9096, 57.7948,61.28006
sgpcmbeC1.c1,2002,0114:30:00,29 ,0.160342,132.9179,  49.611, 35.7062
sgpcmbeC1.c1,2002,0115:30:00,29 ,0.245063,122.5454,44.49195,25.62767
sgpcmbeC1.c1,2002,0116:30:00,29 ,0.059154,51.86031,30.73417,   19.42
sgpcmbeC1.c1,2002,0117:30:00,29 ,       0,27.25695,9.042875,8.798351
sgpcmbeC1.c1,2002,0118:30:00,29 ,       0, 1.45913,0.061513,0.275473
sgpcmbeC1.c1,2002,0119:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0120:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0121:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0122:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0123:30:00,17 ,       0,       0,       0,       0