datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,12 0:30:00,31 ,       0,0.131838,0.004253,0.023679
sgpcmbeC1.c1,2003,12 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 2:30:00,31 ,       0, 0.05545,0.001789,0.009959
sgpcmbeC1.c1,2003,12 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 4:30:00,31 ,       0,0.013889,0.000448,0.002495
sgpcmbeC1.c1,2003,12 5:30:00,31 ,       0,0.111639, 0.00377,0.020042
sgpcmbeC1.c1,2003,12 6:30:00,31 ,       0,0.006134,0.000479, 0.00154
sgpcmbeC1.c1,2003,12 7:30:00,31 ,       0,9.765806,3.171447,2.161925
sgpcmbeC1.c1,2003,12 8:30:00,31 ,1.845996,30.57583,12.03659,6.222809
sgpcmbeC1.c1,2003,12 9:30:00,31 ,0.915946,48.12301,12.40736,9.728208
sgpcmbeC1.c1,2003,1210:30:00,31 ,3.109399,34.64135, 12.0464,8.983861
sgpcmbeC1.c1,2003,1211:30:00,31 ,1.784404,41.54998,12.64494,12.72878
sgpcmbeC1.c1,2003,1212:30:00,31 ,0.363963,33.40062,9.442939,9.913035
sgpcmbeC1.c1,2003,1213:30:00,31 ,0.821867,31.11711,11.47412,9.546021
sgpcmbeC1.c1,2003,1214:30:00,31 , 1.34011,28.50394,10.04332, 7.72989
sgpcmbeC1.c1,2003,1215:30:00,31 ,0.825046,35.34688,12.28194,8.630546
sgpcmbeC1.c1,2003,1216:30:00,31 ,0.443802,36.89988,11.35096,7.744898
sgpcmbeC1.c1,2003,1217:30:00,31 ,       0,4.290002,1.384189,1.101104
sgpcmbeC1.c1,2003,1218:30:00,31 ,       0,0.019961,0.000644,0.003585
sgpcmbeC1.c1,2003,1219:30:00,31 ,       0,0.184673,0.006258,0.033155
sgpcmbeC1.c1,2003,1220:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1221:30:00,31 ,       0,0.280133,0.012144,0.052379
sgpcmbeC1.c1,2003,1222:30:00,31 ,       0,0.098965,0.004191,0.018446
sgpcmbeC1.c1,2003,1223:30:00,31 ,       0,0.069082, 0.00497,0.016013