datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,08 0:30:00,31 ,       0,0.422341, 0.06062,0.135419
sgpcmbeC1.c1,2005,08 1:30:00,30 ,       0,0.392883,0.077815,0.141808
sgpcmbeC1.c1,2005,08 2:30:00,31 ,       0,0.246673,0.027844,0.069721
sgpcmbeC1.c1,2005,08 3:30:00,31 ,       0,0.204758,0.014485,0.050613
sgpcmbeC1.c1,2005,08 4:30:00,31 ,       0,0.062261,0.003783,0.014671
sgpcmbeC1.c1,2005,08 5:30:00,31 ,       0,1.353729,0.186995,0.310779
sgpcmbeC1.c1,2005,08 6:30:00,31 ,0.002812,41.19307,18.32405,12.63748
sgpcmbeC1.c1,2005,08 7:30:00,31 ,0.001775,77.94408,45.93559,18.88781
sgpcmbeC1.c1,2005,08 8:30:00,31 ,0.174506,126.3433,51.22973,35.00566
sgpcmbeC1.c1,2005,08 9:30:00,31 ,0.363328,184.5285,67.15779,49.74016
sgpcmbeC1.c1,2005,0810:30:00,31 ,0.254752,219.1917,77.63827,66.10313
sgpcmbeC1.c1,2005,0811:30:00,31 , 0.15096,324.7177, 108.332,106.2885
sgpcmbeC1.c1,2005,0812:30:00,31 ,1.703063,294.7259,95.38659,104.2546
sgpcmbeC1.c1,2005,0813:30:00,31 , 1.05748,315.1827, 117.155,103.7019
sgpcmbeC1.c1,2005,0814:30:00,31 ,0.579497,271.2435,99.82391,86.93704
sgpcmbeC1.c1,2005,0815:30:00,31 ,0.119037, 242.995,88.36135,72.79318
sgpcmbeC1.c1,2005,0816:30:00,31 ,0.141044,180.0503,58.52634,49.24105
sgpcmbeC1.c1,2005,0817:30:00,31 ,       0,75.80476,35.84056,23.78988
sgpcmbeC1.c1,2005,0818:30:00,31 ,       0,39.21898,19.76358,15.18099
sgpcmbeC1.c1,2005,0819:30:00,31 ,       0,8.722475, 1.38754,2.076365
sgpcmbeC1.c1,2005,0820:30:00,31 ,       0,0.066967,0.003926,0.015277
sgpcmbeC1.c1,2005,0821:30:00,31 ,       0,0.260983,0.024065,0.061934
sgpcmbeC1.c1,2005,0822:30:00,31 ,       0,0.281666,0.029237,0.081199
sgpcmbeC1.c1,2005,0823:30:00,31 ,       0,0.434146,0.063561,0.132613