datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,05 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,05 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,05 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,05 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,05 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,05 5:30:00,29 ,       0,15.53376,1.750949,3.390284
sgpcmbeC1.c1,2007,05 6:30:00,29 ,0.019622,48.96021,13.79528,18.58597
sgpcmbeC1.c1,2007,05 7:30:00,29 ,0.054608,57.05612,18.43272,22.93954
sgpcmbeC1.c1,2007,05 8:30:00,29 ,0.009875,141.6328,26.42514,33.48195
sgpcmbeC1.c1,2007,05 9:30:00,29 , 0.11237,227.7038,49.99173, 71.6942
sgpcmbeC1.c1,2007,0510:30:00,29 ,0.060573,274.6939,75.45507,97.38576
sgpcmbeC1.c1,2007,0511:30:00,29 , 0.25724,276.4303,74.38497,85.49102
sgpcmbeC1.c1,2007,0512:30:00,29 ,       0,354.9887,118.6532,102.8231
sgpcmbeC1.c1,2007,0513:30:00,30 ,0.041164,381.3046,138.0232, 108.382
sgpcmbeC1.c1,2007,0514:30:00,30 ,0.191877,306.1879,122.9108,99.48977
sgpcmbeC1.c1,2007,0515:30:00,30 ,0.166758, 243.696,104.4769,77.35952
sgpcmbeC1.c1,2007,0516:30:00,30 ,0.082999, 176.989,75.00697,61.48619
sgpcmbeC1.c1,2007,0517:30:00,30 ,       0,101.8641,39.09611,33.45878
sgpcmbeC1.c1,2007,0518:30:00,30 ,       0,40.58385,15.36588,15.55164
sgpcmbeC1.c1,2007,0519:30:00,30 ,       0,10.19548, 1.37996,2.192799
sgpcmbeC1.c1,2007,0520:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0521:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0522:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0523:30:00,26 ,       0,       0,       0,       0