datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,05 0:30:00,28 ,       0,2.137973,0.196975,0.514157
sgpcmbeC1.c1,2007,05 1:30:00,28 ,       0,2.074297, 0.18166, 0.46432
sgpcmbeC1.c1,2007,05 2:30:00,28 ,       0,1.975221,0.098832,0.380423
sgpcmbeC1.c1,2007,05 3:30:00,28 ,       0,2.269134,0.094016, 0.43177
sgpcmbeC1.c1,2007,05 4:30:00,28 ,       0,2.271201,0.108763,0.431937
sgpcmbeC1.c1,2007,05 5:30:00,29 ,       0,28.25028,8.178794,7.930972
sgpcmbeC1.c1,2007,05 6:30:00,29 ,0.927588,185.3039, 69.0213,57.41993
sgpcmbeC1.c1,2007,05 7:30:00,29 ,6.030356,388.7675,164.0302,131.0728
sgpcmbeC1.c1,2007,05 8:30:00,29 ,25.69073,586.3777,283.1816,208.9847
sgpcmbeC1.c1,2007,05 9:30:00,29 ,56.75519,756.3831,369.3822, 246.679
sgpcmbeC1.c1,2007,0510:30:00,29 ,44.72629,901.1621, 509.607,273.5752
sgpcmbeC1.c1,2007,0511:30:00,29 ,143.6181,972.9404,634.8424,   271.3
sgpcmbeC1.c1,2007,0512:30:00,29 ,76.63441,1021.444,662.8116,275.4471
sgpcmbeC1.c1,2007,0513:30:00,30 ,42.76846,968.8447,669.1379,270.1944
sgpcmbeC1.c1,2007,0514:30:00,30 ,91.25362,868.7062,581.9892,254.1137
sgpcmbeC1.c1,2007,0515:30:00,30 ,75.28223,718.4337,498.5691,191.9775
sgpcmbeC1.c1,2007,0516:30:00,30 ,42.85218,524.7209,351.3829,133.8516
sgpcmbeC1.c1,2007,0517:30:00,30 ,40.19938,336.0866,216.2394,88.66488
sgpcmbeC1.c1,2007,0518:30:00,30 ,14.77876,155.7749,81.35199,40.74627
sgpcmbeC1.c1,2007,0519:30:00,30 ,0.099618,19.12019, 7.06145,4.513584
sgpcmbeC1.c1,2007,0520:30:00,28 ,       0,1.506092,0.209284,0.437986
sgpcmbeC1.c1,2007,0521:30:00,30 ,       0,1.775148,0.192981,0.423443
sgpcmbeC1.c1,2007,0522:30:00,28 ,       0,2.163472,0.152763,0.428538
sgpcmbeC1.c1,2007,0523:30:00,26 ,       0,2.302927,0.237812,0.526324