datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,01 0:30:00,31 ,       0, 96.6779,11.04228,21.96857
sgpcmbeC1.c1,2007,01 1:30:00,31 ,       0,93.51692,9.845925,19.59618
sgpcmbeC1.c1,2007,01 2:30:00,31 ,       0,62.17558,10.56976,18.10047
sgpcmbeC1.c1,2007,01 3:30:00,31 ,       0,201.2677,15.67589,37.28988
sgpcmbeC1.c1,2007,01 4:30:00,31 ,       0,76.60355,10.77102,19.66757
sgpcmbeC1.c1,2007,01 5:30:00,31 ,       0, 193.772,20.50536,43.05555
sgpcmbeC1.c1,2007,01 6:30:00,31 ,       0,242.7094,24.62623,57.86441
sgpcmbeC1.c1,2007,01 7:30:00,31 ,0.024568,215.3015,30.15289, 63.2116
sgpcmbeC1.c1,2007,01 8:30:00,31 ,       0,241.7933,27.17648, 58.4337
sgpcmbeC1.c1,2007,01 9:30:00,31 ,       0,283.6589,31.56343,67.71584
sgpcmbeC1.c1,2007,0110:30:00,31 ,       0,275.8017, 30.7377, 68.8758
sgpcmbeC1.c1,2007,0111:30:00,31 ,0.019645,292.5722,36.68929, 77.2749
sgpcmbeC1.c1,2007,0112:30:00,31 ,0.114738,243.8443,34.94667,67.42002
sgpcmbeC1.c1,2007,0113:30:00,31 ,       0,188.2073,28.68781,52.19407
sgpcmbeC1.c1,2007,0114:30:00,31 , 0.13739,103.9539,16.32961,27.20837
sgpcmbeC1.c1,2007,0115:30:00,31 ,0.663357,174.8593,16.88786,36.21755
sgpcmbeC1.c1,2007,0116:30:00,31 ,0.379879,370.5313,27.54317,74.20762
sgpcmbeC1.c1,2007,0117:30:00,31 , 0.73343,442.7949,28.24716,82.32253
sgpcmbeC1.c1,2007,0118:30:00,30 ,0.257811,145.7723,13.82659,31.33475
sgpcmbeC1.c1,2007,0119:30:00,30 ,0.225168,173.8226,16.60032,38.60533
sgpcmbeC1.c1,2007,0120:30:00,30 ,0.148508,139.0582,13.70241, 32.4266
sgpcmbeC1.c1,2007,0121:30:00,30 ,0.205813,124.2434,13.91491,27.34894
sgpcmbeC1.c1,2007,0122:30:00,31 ,0.053556,76.51637,9.945687,16.79302
sgpcmbeC1.c1,2007,0123:30:00,31 ,0.049811,65.73631,9.295291, 14.9934