datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,04 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 5:30:00,28 ,       0,7.273006,1.368368,2.172281
sgpcmbeC1.c1,2004,04 6:30:00,28 ,1.949837,29.24736,14.78523, 6.22836
sgpcmbeC1.c1,2004,04 7:30:00,28 ,5.650118,49.71995,20.41291,11.77842
sgpcmbeC1.c1,2004,04 8:30:00,28 ,2.404655,84.92321,24.94804,19.56287
sgpcmbeC1.c1,2004,04 9:30:00,29 ,1.686031,82.29524,25.36359,22.81726
sgpcmbeC1.c1,2004,0410:30:00,29 ,1.494775,145.0535,38.56627,37.31042
sgpcmbeC1.c1,2004,0411:30:00,29 ,0.800915,145.4869,46.07116,44.21911
sgpcmbeC1.c1,2004,0412:30:00,29 ,0.896396, 148.879,41.14384,43.31108
sgpcmbeC1.c1,2004,0413:30:00,29 ,0.416797, 170.181,44.71472, 37.6805
sgpcmbeC1.c1,2004,0414:30:00,29 ,  1.0156,131.6594,41.65818,35.07306
sgpcmbeC1.c1,2004,0415:30:00,29 ,1.402037,131.7384,35.69984,31.65268
sgpcmbeC1.c1,2004,0416:30:00,29 ,2.986705, 79.3623,32.60186,23.83726
sgpcmbeC1.c1,2004,0417:30:00,29 ,4.650211,57.59838,21.79642,16.08529
sgpcmbeC1.c1,2004,0418:30:00,29 ,       0, 40.3579,17.26747,7.564371
sgpcmbeC1.c1,2004,0419:30:00,29 ,       0,3.754272,0.864803,1.303515
sgpcmbeC1.c1,2004,0420:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0421:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0422:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0423:30:00,27 ,       0,       0,       0,       0