datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,12 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 6:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,12 7:30:00,31 ,       0, 13.3082,3.593717,3.553782
sgpcmbeC1.c1,2003,12 8:30:00,31 ,0.000723,46.08554,27.00681,17.68168
sgpcmbeC1.c1,2003,12 9:30:00,31 ,0.001574,121.9356,34.37027,25.09187
sgpcmbeC1.c1,2003,1210:30:00,31 ,0.083718,104.6349,35.39176,29.37775
sgpcmbeC1.c1,2003,1211:30:00,31 ,0.089317, 188.203,41.89229,49.07237
sgpcmbeC1.c1,2003,1212:30:00,30 ,0.060115,149.5786,33.04009,44.77632
sgpcmbeC1.c1,2003,1213:30:00,31 ,0.113777,140.7602,41.50339,46.65682
sgpcmbeC1.c1,2003,1214:30:00,31 ,0.070261,102.5748,32.07101,27.82549
sgpcmbeC1.c1,2003,1215:30:00,31 ,       0,112.6544,38.30869,26.97932
sgpcmbeC1.c1,2003,1216:30:00,31 ,       0,69.09586,27.27962,17.16001
sgpcmbeC1.c1,2003,1217:30:00,31 ,       0,5.699761,1.651852,1.591652
sgpcmbeC1.c1,2003,1218:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1219:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1220:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1221:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1222:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1223:30:00,29 ,       0,       0,       0,       0