datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,12 0:30:00,28 ,0.274061,146.9807,16.38445,32.17093
sgpcmbeC1.c1,1998,12 1:30:00,28 ,       0,61.12276,10.48583,17.98496
sgpcmbeC1.c1,1998,12 2:30:00,28 ,       0,101.6594,13.54888,24.22911
sgpcmbeC1.c1,1998,12 3:30:00,28 ,       0,88.93699,11.99535,20.90245
sgpcmbeC1.c1,1998,12 4:30:00,28 ,       0,109.9759,13.08483,23.66498
sgpcmbeC1.c1,1998,12 5:30:00,28 ,       0,176.0989,15.55793,35.28731
sgpcmbeC1.c1,1998,12 6:30:00,28 ,       0,132.9452,13.72675,28.12744
sgpcmbeC1.c1,1998,12 7:30:00,27 ,       0,56.74396,8.588882,14.76289
sgpcmbeC1.c1,1998,12 8:30:00,27 ,       0,62.49472,7.394069,13.99434
sgpcmbeC1.c1,1998,12 9:30:00,28 ,       0,130.3043,12.06882,27.72873
sgpcmbeC1.c1,1998,1210:30:00,27 ,       0,67.11343,9.356365,15.49389
sgpcmbeC1.c1,1998,1211:30:00,27 ,       0,344.8595,24.67857,68.88607
sgpcmbeC1.c1,1998,1212:30:00,27 ,       0, 56.5036,8.246802,  14.983
sgpcmbeC1.c1,1998,1213:30:00,27 ,       0,66.91965,7.855342,14.29489
sgpcmbeC1.c1,1998,1214:30:00,27 ,       0,48.08474,6.982528,11.58048
sgpcmbeC1.c1,1998,1215:30:00,28 ,       0,95.47751,8.297828,19.70571
sgpcmbeC1.c1,1998,1216:30:00,28 ,0.003474,220.9234,14.07273,41.63473
sgpcmbeC1.c1,1998,1217:30:00,28 ,       0,205.3312,14.15833,39.14817
sgpcmbeC1.c1,1998,1218:30:00,28 ,0.068348,216.0746,20.86535,54.23122
sgpcmbeC1.c1,1998,1219:30:00,28 ,       0,139.9095,10.76659,27.47889
sgpcmbeC1.c1,1998,1220:30:00,25 ,       0,90.34016,11.59272,23.08514
sgpcmbeC1.c1,1998,1221:30:00,26 ,       0,44.86259,8.521381, 13.5896
sgpcmbeC1.c1,1998,1222:30:00,27 ,0.352789,255.7734,17.99398,50.56326
sgpcmbeC1.c1,1998,1223:30:00,27 , 0.33501,96.93055, 14.1891,26.70995