datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,06 0:30:00,30 ,       0,0.050128,0.001671,0.009152
sgpcmbeC1.c1,2004,06 1:30:00,30 ,       0,0.014313,0.000477,0.002613
sgpcmbeC1.c1,2004,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,06 3:30:00,30 ,       0,0.000869,0.000029,0.000159
sgpcmbeC1.c1,2004,06 4:30:00,30 ,       0,0.110283,0.006321,0.022299
sgpcmbeC1.c1,2004,06 5:30:00,30 ,0.514538,9.311238,4.362117,2.966417
sgpcmbeC1.c1,2004,06 6:30:00,30 ,       0,28.30582,9.851252,7.129736
sgpcmbeC1.c1,2004,06 7:30:00,29 ,2.946605,31.37667,13.37644,7.591745
sgpcmbeC1.c1,2004,06 8:30:00,28 ,3.148646, 55.6545,17.96821,11.72832
sgpcmbeC1.c1,2004,06 9:30:00,29 ,1.257403,43.46392,15.90431,13.44496
sgpcmbeC1.c1,2004,0610:30:00,29 ,2.861609,52.37458,22.29828,16.22655
sgpcmbeC1.c1,2004,0611:30:00,29 ,1.026179,57.46407,21.19105,18.04223
sgpcmbeC1.c1,2004,0612:30:00,29 ,0.742071,56.71805,20.58535,17.08231
sgpcmbeC1.c1,2004,0613:30:00,29 ,1.986393,66.08355,29.22896,19.52556
sgpcmbeC1.c1,2004,0614:30:00,29 ,3.439817, 62.4221,30.27247,19.10445
sgpcmbeC1.c1,2004,0615:30:00,29 ,4.790101,55.05484,23.85531,16.31899
sgpcmbeC1.c1,2004,0616:30:00,29 , 4.08046,46.03992,21.49503,13.27375
sgpcmbeC1.c1,2004,0617:30:00,29 ,3.211673,43.77757,18.09558,10.50634
sgpcmbeC1.c1,2004,0618:30:00,29 ,4.556562,24.85463,13.60038,4.134069
sgpcmbeC1.c1,2004,0619:30:00,29 ,       0,11.34303,5.660665,2.879021
sgpcmbeC1.c1,2004,0620:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0621:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0622:30:00,29 ,       0,0.221423,0.009398,0.041867
sgpcmbeC1.c1,2004,0623:30:00,29 ,       0,0.584031,0.020139,0.108452