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 ,       0,13.10192,1.363408, 2.60944
sgpcmbeC1.c1,2007,05 6:30:00,29 ,0.050902,131.4187,23.89957,38.00737
sgpcmbeC1.c1,2007,05 7:30:00,29 ,0.053274,313.6858,69.75183,108.9476
sgpcmbeC1.c1,2007,05 8:30:00,29 ,0.001276,483.6275,136.6848,187.4601
sgpcmbeC1.c1,2007,05 9:30:00,29 ,0.065155,657.4701,  162.37,233.0325
sgpcmbeC1.c1,2007,0510:30:00,29 ,0.014999,791.8157,213.6955,272.9821
sgpcmbeC1.c1,2007,0511:30:00,29 ,0.120316,871.4787,290.0468,325.9631
sgpcmbeC1.c1,2007,0512:30:00,29 ,       0,883.0566,313.0094,318.0495
sgpcmbeC1.c1,2007,0513:30:00,30 ,  0.0093,798.6866,341.6321,285.0698
sgpcmbeC1.c1,2007,0514:30:00,30 ,0.332413,755.4133,301.2787,261.3508
sgpcmbeC1.c1,2007,0515:30:00,30 ,0.090652,578.7711,249.6192,215.1466
sgpcmbeC1.c1,2007,0516:30:00,30 , 0.09267,413.4609,146.2452,134.8664
sgpcmbeC1.c1,2007,0517:30:00,30 ,       0,233.2513,80.99114,84.30613
sgpcmbeC1.c1,2007,0518:30:00,30 ,       0,93.37748,23.07349,28.89723
sgpcmbeC1.c1,2007,0519:30:00,30 ,0.098287,5.971926,1.039428,1.318278
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