datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,07 0:30:00,31 ,       0,0.146784,0.006324,0.027527
sgpcmbeC1.c1,1998,07 1:30:00,31 ,       0,0.171973,0.006695,0.031332
sgpcmbeC1.c1,1998,07 2:30:00,31 ,       0,0.225728,0.009197,0.040844
sgpcmbeC1.c1,1998,07 3:30:00,31 ,       0, 0.02568,0.001262,0.004893
sgpcmbeC1.c1,1998,07 4:30:00,31 ,       0,0.036241,0.001169,0.006509
sgpcmbeC1.c1,1998,07 5:30:00,31 ,0.000366,6.530664, 1.65438,1.977178
sgpcmbeC1.c1,1998,07 6:30:00,31 ,0.013364,98.24563,40.00717,36.21776
sgpcmbeC1.c1,1998,07 7:30:00,31 ,0.021977,264.9727, 134.432,102.5708
sgpcmbeC1.c1,1998,07 8:30:00,31 ,0.061234,442.1865,243.4314,164.8364
sgpcmbeC1.c1,1998,07 9:30:00,31 ,0.609009,603.6491,372.8809,221.4924
sgpcmbeC1.c1,1998,0710:30:00,31 , 0.87178,723.1428,500.2958,248.8742
sgpcmbeC1.c1,1998,0711:30:00,31 ,6.442719,796.2406,563.7214,256.0388
sgpcmbeC1.c1,1998,0712:30:00,31 ,231.1931,824.6262,651.2049,167.1102
sgpcmbeC1.c1,1998,0713:30:00,31 ,197.9498,823.3507,605.6874,183.4376
sgpcmbeC1.c1,1998,0714:30:00,31 ,1.829071,760.7076,555.3448,181.6079
sgpcmbeC1.c1,1998,0715:30:00,31 ,156.9589,632.7208,429.0947,151.0045
sgpcmbeC1.c1,1998,0716:30:00,31 ,1.167633,  484.86,321.2351,136.2615
sgpcmbeC1.c1,1998,0717:30:00,31 ,1.239006,313.9001,187.0575,86.37837
sgpcmbeC1.c1,1998,0718:30:00,31 ,0.444233,132.9344,71.68765,37.40551
sgpcmbeC1.c1,1998,0719:30:00,31 ,0.000054,  13.519,5.186451, 4.32633
sgpcmbeC1.c1,1998,0720:30:00,31 ,       0,  0.0024,0.000077,0.000431
sgpcmbeC1.c1,1998,0721:30:00,31 ,       0,0.003131,0.000101,0.000562
sgpcmbeC1.c1,1998,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0723:30:00,31 ,       0, 0.01405,0.000453,0.002524