datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,12 0:30:00,30 ,195.7608, 338.195,268.6446,40.71626
sgpcmbeC1.c1,2007,12 1:30:00,30 ,195.3655,340.8228,267.9061,41.32079
sgpcmbeC1.c1,2007,12 2:30:00,30 ,194.2225,343.0035,268.5939,40.21433
sgpcmbeC1.c1,2007,12 3:30:00,30 ,193.1785,346.0283,269.2476,41.09044
sgpcmbeC1.c1,2007,12 4:30:00,30 ,193.6663, 352.393,269.3592,43.23145
sgpcmbeC1.c1,2007,12 5:30:00,30 ,193.4262,358.2973,272.8848, 45.9132
sgpcmbeC1.c1,2007,12 6:30:00,30 ,192.9407,364.6174,271.8462,47.79323
sgpcmbeC1.c1,2007,12 7:30:00,30 ,193.4768,367.6311,  271.81,48.77211
sgpcmbeC1.c1,2007,12 8:30:00,30 ,197.1175,369.5641,271.9667,48.34144
sgpcmbeC1.c1,2007,12 9:30:00,30 ,201.5425,371.9779,271.8596,46.96502
sgpcmbeC1.c1,2007,1210:30:00,30 , 202.079,374.5211,272.8701, 44.7072
sgpcmbeC1.c1,2007,1211:30:00,30 ,  201.95,379.6461,272.2125,43.60464
sgpcmbeC1.c1,2007,1212:30:00,30 ,207.8298,385.3931,273.8738,43.01015
sgpcmbeC1.c1,2007,1213:30:00,30 ,211.1729,386.2571, 275.772,42.58243
sgpcmbeC1.c1,2007,1214:30:00,30 , 218.054,386.9996,276.7881,41.53698
sgpcmbeC1.c1,2007,1215:30:00,30 ,210.2742, 389.753,274.1374,40.46878
sgpcmbeC1.c1,2007,1216:30:00,30 ,210.9437,393.3451,274.5763,41.58799
sgpcmbeC1.c1,2007,1217:30:00,30 ,208.3235,396.5651,271.7845, 43.7599
sgpcmbeC1.c1,2007,1218:30:00,29 ,208.8161,399.7716, 271.297,44.05921
sgpcmbeC1.c1,2007,1219:30:00,29 ,206.8953,390.9978, 271.147,41.49455
sgpcmbeC1.c1,2007,1220:30:00,29 ,204.4998,362.0479,267.9467,40.62199
sgpcmbeC1.c1,2007,1221:30:00,29 ,200.7208,344.1981,  267.82,38.94009
sgpcmbeC1.c1,2007,1222:30:00,29 ,197.6393,342.7299, 269.265,38.55081
sgpcmbeC1.c1,2007,1223:30:00,29 ,196.0485,331.2557,268.8822,39.28722