datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,02 0:30:00,26 ,       0,1.928986,0.473087,0.611858
sgpcmbeC1.c1,2006,02 1:30:00,25 ,       0,1.659109, 0.46547, 0.60482
sgpcmbeC1.c1,2006,02 2:30:00,26 ,       0,1.817356,0.541308,0.672516
sgpcmbeC1.c1,2006,02 3:30:00,27 ,       0,1.694019,0.405747,0.611538
sgpcmbeC1.c1,2006,02 4:30:00,27 ,       0,1.810684,0.593277,0.729186
sgpcmbeC1.c1,2006,02 5:30:00,27 ,       0,1.738935,0.501478,  0.6477
sgpcmbeC1.c1,2006,02 6:30:00,28 ,       0,1.670672,0.464325,0.589752
sgpcmbeC1.c1,2006,02 7:30:00,28 ,5.793525,46.67771,20.39839,12.71726
sgpcmbeC1.c1,2006,02 8:30:00,28 ,7.030847,105.1834,53.27763,21.94443
sgpcmbeC1.c1,2006,02 9:30:00,28 ,13.03665,123.0298,56.37313,23.96934
sgpcmbeC1.c1,2006,0210:30:00,28 ,20.00303,139.3816,61.33878, 36.3497
sgpcmbeC1.c1,2006,0211:30:00,28 ,19.53546,150.0084,58.59675,47.40626
sgpcmbeC1.c1,2006,0212:30:00,28 ,3.634753, 181.074,49.73971,49.57651
sgpcmbeC1.c1,2006,0213:30:00,28 , 12.6346,141.1348,54.88409,39.51738
sgpcmbeC1.c1,2006,0214:30:00,28 ,11.23442,142.2016,57.91923,36.28252
sgpcmbeC1.c1,2006,0215:30:00,28 ,17.65788,167.9661, 61.7683,33.61054
sgpcmbeC1.c1,2006,0216:30:00,28 ,28.35443,117.7385,61.61781,20.42921
sgpcmbeC1.c1,2006,0217:30:00,28 , 7.06337,61.50637,41.38475,15.79804
sgpcmbeC1.c1,2006,0218:30:00,28 ,       0,15.52049,3.007133,3.124118
sgpcmbeC1.c1,2006,0219:30:00,28 ,       0,1.736781,0.360658,0.546666
sgpcmbeC1.c1,2006,0220:30:00,27 ,       0,1.861581,0.277914,0.509195
sgpcmbeC1.c1,2006,0221:30:00,26 ,       0,1.782337,0.503121,0.648528
sgpcmbeC1.c1,2006,0222:30:00,26 ,       0,1.571666,0.416888,0.575785
sgpcmbeC1.c1,2006,0223:30:00,26 ,       0,1.618878,0.301798,0.458406