datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,05 5:30:00,30 ,       0,9.208759,3.174752,2.613988
sgpcmbeC1.c1,2002,05 6:30:00,31 , 1.42076,47.51672,23.13077,14.04127
sgpcmbeC1.c1,2002,05 7:30:00,31 ,4.249485,85.68153,53.93387,25.97305
sgpcmbeC1.c1,2002,05 8:30:00,31 ,7.520294,116.0637,73.92547,35.63942
sgpcmbeC1.c1,2002,05 9:30:00,31 , 10.7604,146.2254,96.69766,38.08288
sgpcmbeC1.c1,2002,0510:30:00,31 ,22.75092,153.4245,107.6282,40.94314
sgpcmbeC1.c1,2002,0511:30:00,31 , 16.3469, 159.781,110.1358,49.59703
sgpcmbeC1.c1,2002,0512:30:00,31 ,16.29358,156.9709,103.4897,52.84688
sgpcmbeC1.c1,2002,0513:30:00,31 ,2.692818,157.9646, 98.0484,56.21134
sgpcmbeC1.c1,2002,0514:30:00,31 , 2.84865,148.0297,103.4163,47.51684
sgpcmbeC1.c1,2002,0515:30:00,31 ,2.409736,133.7479,91.26937,43.20679
sgpcmbeC1.c1,2002,0516:30:00,31 ,10.65687,112.5236,75.49949,34.85028
sgpcmbeC1.c1,2002,0517:30:00,31 ,1.310269, 82.3299,55.74873,25.54234
sgpcmbeC1.c1,2002,0518:30:00,31 ,0.094731,42.55029,22.13892,12.32555
sgpcmbeC1.c1,2002,0519:30:00,31 ,       0, 6.83096,1.717232,1.801902
sgpcmbeC1.c1,2002,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0522:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0523:30:00,30 ,       0,       0,       0,       0