datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,05 0:30:00,31 ,       0,0.196434,0.006337,0.035281
sgpcmbeC1.c1,2003,05 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 5:30:00,31 ,       0,9.716201,2.045953,2.969784
sgpcmbeC1.c1,2003,05 6:30:00,31 ,0.019205,116.1204,38.60902,46.94999
sgpcmbeC1.c1,2003,05 7:30:00,31 ,0.000735,306.0656,117.4003,127.2327
sgpcmbeC1.c1,2003,05 8:30:00,31 ,0.119658,506.8809,214.4009,206.3724
sgpcmbeC1.c1,2003,05 9:30:00,31 ,0.473236,684.5798,308.5403,268.5086
sgpcmbeC1.c1,2003,0510:30:00,31 ,0.809784,820.7468,420.9844,315.4477
sgpcmbeC1.c1,2003,0511:30:00,31 ,1.341202,903.2897,473.4708,350.7627
sgpcmbeC1.c1,2003,0512:30:00,31 ,0.426285,938.4693,502.3017,360.8072
sgpcmbeC1.c1,2003,0513:30:00,31 ,0.090332,907.2096,435.2333, 343.726
sgpcmbeC1.c1,2003,0514:30:00,31 ,1.016342,814.3772,406.2828,298.2701
sgpcmbeC1.c1,2003,0515:30:00,31 ,0.050446,671.6629,343.8488,245.5688
sgpcmbeC1.c1,2003,0516:30:00,31 ,       0,492.7985,236.4759,174.0239
sgpcmbeC1.c1,2003,0517:30:00,31 ,0.000282,291.2556, 153.978,95.29961
sgpcmbeC1.c1,2003,0518:30:00,31 ,       0,101.8642,45.79637,32.65588
sgpcmbeC1.c1,2003,0519:30:00,31 ,       0,7.057323,1.910919,2.186185
sgpcmbeC1.c1,2003,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0522:30:00,31 ,       0,1.177913,0.037997,0.211559
sgpcmbeC1.c1,2003,0523:30:00,31 ,       0,1.237424,0.039917,0.222248