datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,04 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 5:30:00,30 ,       0,2.225935,0.124529,  0.4283
sgpcmbeC1.c1,2002,04 6:30:00,30 ,       0,47.41125,12.64418,16.08343
sgpcmbeC1.c1,2002,04 7:30:00,30 ,       0,119.1669,31.91317,34.14499
sgpcmbeC1.c1,2002,04 8:30:00,30 ,0.010848,131.4672,34.36624,38.16957
sgpcmbeC1.c1,2002,04 9:30:00,30 ,0.029476, 239.069,44.71219,54.78859
sgpcmbeC1.c1,2002,0410:30:00,30 ,0.098725,156.7373,38.30651,44.71879
sgpcmbeC1.c1,2002,0411:30:00,30 ,0.062548,226.4414,53.76255,76.85726
sgpcmbeC1.c1,2002,0412:30:00,30 ,0.151257,373.3016,53.47352,88.65024
sgpcmbeC1.c1,2002,0413:30:00,30 ,0.186983,206.5396,48.37095,62.43925
sgpcmbeC1.c1,2002,0414:30:00,30 ,       0,214.2287,53.94597,62.43816
sgpcmbeC1.c1,2002,0415:30:00,30 ,0.237106,218.4349,56.33754,47.14006
sgpcmbeC1.c1,2002,0416:30:00,30 ,0.006221,143.4399,53.16505,39.40595
sgpcmbeC1.c1,2002,0417:30:00,30 ,       0,85.40919,36.68173,29.07983
sgpcmbeC1.c1,2002,0418:30:00,30 ,       0,42.06962,18.12771,13.70842
sgpcmbeC1.c1,2002,0419:30:00,30 ,       0,1.548439,0.296025,0.486223
sgpcmbeC1.c1,2002,0420:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0421:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0422:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0423:30:00,29 ,       0,       0,       0,       0