datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,12 0:30:00,31 ,0.438392,13.64462, 2.70012,3.263992
sgpcmbeC1.c1,2005,12 1:30:00,31 ,0.491744,15.12426,1.883802,2.691461
sgpcmbeC1.c1,2005,12 2:30:00,31 ,0.439759,23.43496,2.284885,4.555797
sgpcmbeC1.c1,2005,12 3:30:00,31 ,0.300426, 19.6999,3.169723,4.524174
sgpcmbeC1.c1,2005,12 4:30:00,31 ,0.289944,16.70763,3.140766,3.952436
sgpcmbeC1.c1,2005,12 5:30:00,31 , 0.25629, 22.0974,4.167149, 5.49364
sgpcmbeC1.c1,2005,12 6:30:00,31 ,0.291507,19.07855,3.670667,4.800487
sgpcmbeC1.c1,2005,12 7:30:00,31 ,0.276055,21.08905,3.653335,5.455136
sgpcmbeC1.c1,2005,12 8:30:00,31 ,0.448334,12.93959,2.866875,3.833894
sgpcmbeC1.c1,2005,12 9:30:00,31 ,0.371263,26.11056,3.685007,4.859044
sgpcmbeC1.c1,2005,1210:30:00,31 , 0.54516,17.74018,3.482221,3.744423
sgpcmbeC1.c1,2005,1211:30:00,30 ,0.569808,15.26376,3.770709,3.936711
sgpcmbeC1.c1,2005,1212:30:00,31 ,0.388004,19.62962,3.917905,5.043827
sgpcmbeC1.c1,2005,1213:30:00,31 ,0.610419,17.86335,3.878777,4.448607
sgpcmbeC1.c1,2005,1214:30:00,31 ,0.460674,14.30594,2.299357,2.792937
sgpcmbeC1.c1,2005,1215:30:00,31 ,0.412304,10.57257,1.844222, 2.09018
sgpcmbeC1.c1,2005,1216:30:00,31 ,0.332678,21.48031,2.925625,4.893486
sgpcmbeC1.c1,2005,1217:30:00,31 , 0.47292,12.16095,2.849211,3.433976
sgpcmbeC1.c1,2005,1218:30:00,31 ,0.562086,11.93074,2.237271,  2.3932
sgpcmbeC1.c1,2005,1219:30:00,31 ,0.348426,22.42454,2.960213,4.519481
sgpcmbeC1.c1,2005,1220:30:00,31 ,0.485598, 18.5742,3.600794,4.769044
sgpcmbeC1.c1,2005,1221:30:00,31 ,0.348628,35.18738,4.437564,7.678652
sgpcmbeC1.c1,2005,1222:30:00,31 ,0.414002,22.47388,3.033923,5.194009
sgpcmbeC1.c1,2005,1223:30:00,31 ,0.415878,13.44013,2.470337,2.911111