datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,08 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,08 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,08 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,08 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,08 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,08 5:30:00,31 ,       0,2.822811,0.694796,0.850066
sgpcmbeC1.c1,2004,08 6:30:00,31 ,1.396408,18.66303,9.908667,4.521227
sgpcmbeC1.c1,2004,08 7:30:00,31 ,1.467263,33.80636,14.68864,8.245105
sgpcmbeC1.c1,2004,08 8:30:00,31 ,3.146686,41.70649,16.71011,10.26903
sgpcmbeC1.c1,2004,08 9:30:00,31 ,4.111685,56.89246,21.83994,16.28676
sgpcmbeC1.c1,2004,0810:30:00,31 ,3.353567,79.02033,20.96627,19.99884
sgpcmbeC1.c1,2004,0811:30:00,31 ,1.198228,61.04976,18.54395,19.35982
sgpcmbeC1.c1,2004,0812:30:00,31 ,0.537933,71.39462, 20.2695,22.31282
sgpcmbeC1.c1,2004,0813:30:00,31 ,2.573576,76.31789,25.04226,22.70012
sgpcmbeC1.c1,2004,0814:30:00,31 ,3.919462,65.70002,24.41868,17.13174
sgpcmbeC1.c1,2004,0815:30:00,31 ,6.205692, 57.9728,24.28926,16.32594
sgpcmbeC1.c1,2004,0816:30:00,31 ,6.913484,41.23024,17.89151,9.628401
sgpcmbeC1.c1,2004,0817:30:00,31 ,2.820671, 37.3431, 15.5675,7.353813
sgpcmbeC1.c1,2004,0818:30:00,31 ,0.612509,17.02033,12.04153, 3.87322
sgpcmbeC1.c1,2004,0819:30:00,31 ,       0,4.777213,1.553604,1.511753
sgpcmbeC1.c1,2004,0820:30:00,31 ,       0,0.130063,0.004196, 0.02336
sgpcmbeC1.c1,2004,0821:30:00,31 ,       0,0.097112,0.003133,0.017442
sgpcmbeC1.c1,2004,0822:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0823:30:00,31 ,       0,       0,       0,       0