datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,12 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,12 7:30:00,31 ,0.227917,13.56267,4.982997,3.033905
sgpcmbeC1.c1,1999,12 8:30:00,31 ,10.50515,92.39158, 46.5986,22.60084
sgpcmbeC1.c1,1999,12 9:30:00,31 ,30.23538,183.7842,90.63814,47.72891
sgpcmbeC1.c1,1999,1210:30:00,31 ,48.63121,260.0444,110.8735,68.00461
sgpcmbeC1.c1,1999,1211:30:00,31 ,37.33998, 330.357,129.4484,84.29597
sgpcmbeC1.c1,1999,1212:30:00,31 , 19.3451,278.9914,115.7369,71.50121
sgpcmbeC1.c1,1999,1213:30:00,31 ,22.98521,255.7478,114.8676, 73.1069
sgpcmbeC1.c1,1999,1214:30:00,31 ,21.11579,212.3309,94.38968,54.57092
sgpcmbeC1.c1,1999,1215:30:00,31 ,21.12877,149.6821,67.71364,36.93419
sgpcmbeC1.c1,1999,1216:30:00,31 ,4.145219,69.16447,33.20029,15.93712
sgpcmbeC1.c1,1999,1217:30:00,31 ,       0,4.937768,2.471088,1.410746
sgpcmbeC1.c1,1999,1218:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1219:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1220:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1221:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1222:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,1223:30:00,29 ,       0,       0,       0,       0