datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,12 0:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 1:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 2:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 3:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 4:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 6:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,12 7:30:00,31 ,       0,11.62706,5.569314,2.793513
sgpcmbeC1.c1,2001,12 8:30:00,31 ,3.117989,36.22387, 12.3714,7.800457
sgpcmbeC1.c1,2001,12 9:30:00,31 ,2.170145,45.03168,14.64904,13.70873
sgpcmbeC1.c1,2001,1210:30:00,31 ,1.078276,53.94576,15.14445,15.01728
sgpcmbeC1.c1,2001,1211:30:00,31 ,0.371854, 65.7433,15.68659,18.06194
sgpcmbeC1.c1,2001,1212:30:00,31 ,0.101519,55.77588,13.49548,14.99574
sgpcmbeC1.c1,2001,1213:30:00,30 ,0.419537,58.53526,13.76967,15.43987
sgpcmbeC1.c1,2001,1214:30:00,31 ,0.822282,43.49124,10.90311,11.47876
sgpcmbeC1.c1,2001,1215:30:00,31 ,2.316938,45.16053,11.80144,11.78454
sgpcmbeC1.c1,2001,1216:30:00,31 ,4.191306,36.27145,12.77638, 8.81729
sgpcmbeC1.c1,2001,1217:30:00,31 ,       0,7.673223,4.135857,1.814639
sgpcmbeC1.c1,2001,1218:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1219:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1220:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1221:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1222:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,1223:30:00,18 ,       0,       0,       0,       0