datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,11 0:30:00,11 ,       0,58.09364,12.71759,20.77026
sgpcmbeC1.c1,2007,11 1:30:00,11 ,       0,65.03791,11.07303,19.36936
sgpcmbeC1.c1,2007,11 2:30:00,11 ,       0, 56.2593,  11.854,21.28343
sgpcmbeC1.c1,2007,11 3:30:00,11 ,       0,70.49475,12.85199,22.32932
sgpcmbeC1.c1,2007,11 4:30:00,11 ,       0,97.96307,15.19829,31.76588
sgpcmbeC1.c1,2007,11 5:30:00,11 ,       0,95.71399,11.69379,28.64478
sgpcmbeC1.c1,2007,11 6:30:00,11 ,       0,47.67203,7.046903,14.70348
sgpcmbeC1.c1,2007,11 7:30:00,11 ,       0,43.66145,6.221297,13.22491
sgpcmbeC1.c1,2007,11 8:30:00,11 ,       0,41.59314,6.273153,13.24219
sgpcmbeC1.c1,2007,11 9:30:00,11 ,       0, 21.8074,3.770959,6.731813
sgpcmbeC1.c1,2007,1110:30:00,11 ,       0,43.52847,6.737265,12.58753
sgpcmbeC1.c1,2007,1111:30:00,11 , 0.19214,29.11807,5.132866,8.238394
sgpcmbeC1.c1,2007,1112:30:00,11 ,0.172343,31.09575,6.193872,9.445121
sgpcmbeC1.c1,2007,1113:30:00,11 ,0.111348,43.08602,9.899701,13.63142
sgpcmbeC1.c1,2007,1114:30:00,11 ,0.318793,73.71286,11.46384,21.19575
sgpcmbeC1.c1,2007,1115:30:00,11 ,0.063082,53.89693,13.28195,19.93408
sgpcmbeC1.c1,2007,1116:30:00,12 ,0.622821,72.19267,13.38207,22.48663
sgpcmbeC1.c1,2007,1117:30:00,12 , 0.51778,62.42817,8.517787,17.19115
sgpcmbeC1.c1,2007,1118:30:00,12 ,0.887315,40.36251,6.706858,10.97805
sgpcmbeC1.c1,2007,1119:30:00,12 ,0.738289,69.51846,16.60148,24.94964
sgpcmbeC1.c1,2007,1120:30:00,12 ,       0,40.00082,9.456644,12.84128
sgpcmbeC1.c1,2007,1121:30:00,12 ,       0,110.9276,  17.346,31.31752
sgpcmbeC1.c1,2007,1122:30:00,12 ,       0,84.56242,18.69148,31.63204
sgpcmbeC1.c1,2007,1123:30:00,12 ,       0,115.3837,23.78218,40.65095