datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,09 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,09 1:30:00,28 ,       0,0.121545,0.004341, 0.02297
sgpcmbeC1.c1,1997,09 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,09 3:30:00,28 ,       0,0.211099,0.007539,0.039894
sgpcmbeC1.c1,1997,09 4:30:00,28 ,       0,0.317133,0.019058,0.071305
sgpcmbeC1.c1,1997,09 5:30:00,28 ,       0,0.117351,0.004191,0.022177
sgpcmbeC1.c1,1997,09 6:30:00,28 ,       0,12.67949,5.761876,3.982066
sgpcmbeC1.c1,1997,09 7:30:00,27 ,1.017403,26.90022,13.14648,7.661163
sgpcmbeC1.c1,1997,09 8:30:00,28 ,0.554243,34.02091, 15.0598,9.039643
sgpcmbeC1.c1,1997,09 9:30:00,28 ,1.688706,43.20381, 16.1608,12.22099
sgpcmbeC1.c1,1997,0910:30:00,28 ,2.447705,43.88282, 18.4281,15.37139
sgpcmbeC1.c1,1997,0911:30:00,28 , 0.85864,57.17756,16.38347, 15.5428
sgpcmbeC1.c1,1997,0912:30:00,28 ,0.564602, 57.6263,17.15602,18.69353
sgpcmbeC1.c1,1997,0913:30:00,28 , 3.03038,49.23368,17.31675,17.32297
sgpcmbeC1.c1,1997,0914:30:00,28 ,4.833517, 45.2042,14.94396,12.41943
sgpcmbeC1.c1,1997,0915:30:00,27 ,2.630633,60.34389,20.37581,14.89706
sgpcmbeC1.c1,1997,0916:30:00,27 , 2.68164,33.44601,13.47377,7.213574
sgpcmbeC1.c1,1997,0917:30:00,27 ,0.460074,16.43112,10.88619,4.917581
sgpcmbeC1.c1,1997,0918:30:00,27 ,       0,10.16183,4.065264,3.431047
sgpcmbeC1.c1,1997,0919:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0920:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0921:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0922:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0923:30:00,27 ,       0,       0,       0,       0