datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,04 0:30:00,30 ,0.580033,3.697874,1.798734,0.821059
sgpcmbeC1.c1,2006,04 1:30:00,30 ,0.576925,3.896655,1.815769,0.838837
sgpcmbeC1.c1,2006,04 2:30:00,30 ,0.573583,3.916113,1.819767,0.819921
sgpcmbeC1.c1,2006,04 3:30:00,30 ,0.633489,3.867542,1.811309,0.815867
sgpcmbeC1.c1,2006,04 4:30:00,30 ,0.559066, 3.79985,1.826289,0.849143
sgpcmbeC1.c1,2006,04 5:30:00,29 ,0.580698,3.899397,  1.8394,0.922983
sgpcmbeC1.c1,2006,04 6:30:00,29 ,0.646495,4.326212,1.852414,0.955325
sgpcmbeC1.c1,2006,04 7:30:00,29 ,0.651569,4.280545,1.849223,0.961101
sgpcmbeC1.c1,2006,04 8:30:00,30 , 0.73974,3.775711,1.836716,0.899665
sgpcmbeC1.c1,2006,04 9:30:00,29 ,0.686452,3.954141, 1.84982,0.890932
sgpcmbeC1.c1,2006,0410:30:00,29 ,0.562663,3.903918,1.915092,0.888703
sgpcmbeC1.c1,2006,0411:30:00,29 ,0.540376,3.635811, 1.89316, 0.80359
sgpcmbeC1.c1,2006,0412:30:00,30 ,0.517099,4.027486,1.969943,0.888302
sgpcmbeC1.c1,2006,0413:30:00,30 ,0.482773,3.712274,1.951984,0.884037
sgpcmbeC1.c1,2006,0414:30:00,30 ,0.519259,4.016137,1.941492,0.918358
sgpcmbeC1.c1,2006,0415:30:00,30 ,0.572773, 4.48033,1.951146,1.002965
sgpcmbeC1.c1,2006,0416:30:00,30 ,0.551561,4.202381,1.926042, 0.97052
sgpcmbeC1.c1,2006,0417:30:00,30 ,0.589188,3.870103,1.880016,0.916235
sgpcmbeC1.c1,2006,0418:30:00,30 ,0.590662,3.428346,1.807102,0.841624
sgpcmbeC1.c1,2006,0419:30:00,30 ,0.609884,3.331393,1.812796,0.859708
sgpcmbeC1.c1,2006,0420:30:00,30 ,0.599356,4.028308, 1.85033,0.937152
sgpcmbeC1.c1,2006,0421:30:00,30 ,0.584095,3.980238,1.849642,0.920857
sgpcmbeC1.c1,2006,0422:30:00,30 , 0.57519,3.885648,1.826136,0.885874
sgpcmbeC1.c1,2006,0423:30:00,30 , 0.57373,3.448434, 1.78008,  0.8034