datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,12 0:30:00,31 ,       0,  0.7704, 0.11189,0.211159
sgpcmbeC1.c1,2004,12 1:30:00,31 ,       0,0.782073,0.066702,0.178576
sgpcmbeC1.c1,2004,12 2:30:00,31 ,       0,0.589784,0.041971,0.136251
sgpcmbeC1.c1,2004,12 3:30:00,31 ,       0,0.340383,0.043272,0.107215
sgpcmbeC1.c1,2004,12 4:30:00,31 ,       0,0.318671,0.022011,0.071336
sgpcmbeC1.c1,2004,12 5:30:00,31 ,       0,0.103471,0.003338,0.018584
sgpcmbeC1.c1,2004,12 6:30:00,31 ,       0,0.000978,0.000032,0.000176
sgpcmbeC1.c1,2004,12 7:30:00,31 ,0.000926,15.36508,4.648479,4.426141
sgpcmbeC1.c1,2004,12 8:30:00,31 ,0.072309,47.74143,31.85935,17.46892
sgpcmbeC1.c1,2004,12 9:30:00,31 ,0.117477,89.99892,40.78802,21.66754
sgpcmbeC1.c1,2004,1210:30:00,31 , 0.11813,157.5101,42.62686,37.20891
sgpcmbeC1.c1,2004,1211:30:00,31 , 0.04175,122.6923,33.19823, 32.0488
sgpcmbeC1.c1,2004,1212:30:00,31 ,0.135743,159.3222,26.30765,40.39175
sgpcmbeC1.c1,2004,1213:30:00,31 , 0.30804,191.6308,36.58215,40.26165
sgpcmbeC1.c1,2004,1214:30:00,31 ,0.056921,139.2955,37.07823,26.76299
sgpcmbeC1.c1,2004,1215:30:00,31 ,       0,84.12138,41.76171,20.24427
sgpcmbeC1.c1,2004,1216:30:00,31 ,0.000161,45.50436,28.42046,16.26701
sgpcmbeC1.c1,2004,1217:30:00,31 ,       0,4.739147,1.761578,1.371089
sgpcmbeC1.c1,2004,1218:30:00,31 ,       0,0.222142,0.076225,0.077042
sgpcmbeC1.c1,2004,1219:30:00,31 ,       0,0.398346,0.100045,0.126892
sgpcmbeC1.c1,2004,1220:30:00,31 ,       0,0.531918,0.187606,0.187439
sgpcmbeC1.c1,2004,1221:30:00,31 ,       0,0.540316,0.140136,0.190026
sgpcmbeC1.c1,2004,1222:30:00,31 ,       0,0.513842,0.124872,0.187234
sgpcmbeC1.c1,2004,1223:30:00,31 ,       0, 0.72329,0.073555,0.189711