datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,07 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,07 5:30:00,31 ,       0,18.70923,8.623606,4.314087
sgpcmbeC1.c1,2002,07 6:30:00,31 , 4.08765,90.28682,64.87377,18.22493
sgpcmbeC1.c1,2002,07 7:30:00,31 , 40.2684,170.6768,121.7236,36.44751
sgpcmbeC1.c1,2002,07 8:30:00,31 ,40.50437,302.1736,169.6916,70.67803
sgpcmbeC1.c1,2002,07 9:30:00,31 ,89.83564,373.6008,  219.98,86.84832
sgpcmbeC1.c1,2002,0710:30:00,31 , 86.5212, 490.871,256.4636, 123.076
sgpcmbeC1.c1,2002,0711:30:00,31 ,83.37698,473.7811,268.6423, 119.325
sgpcmbeC1.c1,2002,0712:30:00,31 ,93.16732,521.1935,275.6805, 126.464
sgpcmbeC1.c1,2002,0713:30:00,31 ,101.6429,469.5993,282.9799,117.0131
sgpcmbeC1.c1,2002,0714:30:00,31 ,100.9782,509.3841, 267.392,108.8753
sgpcmbeC1.c1,2002,0715:30:00,31 ,92.30282,418.5505,245.7711,87.10824
sgpcmbeC1.c1,2002,0716:30:00,31 ,  84.034,323.0224,195.6127,64.43059
sgpcmbeC1.c1,2002,0717:30:00,31 ,7.788186,216.6956,135.6074,44.48254
sgpcmbeC1.c1,2002,0718:30:00,31 ,       0,117.9934,77.75999,23.12995
sgpcmbeC1.c1,2002,0719:30:00,31 ,       0,37.33395, 15.6185,7.024493
sgpcmbeC1.c1,2002,0720:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0723:30:00,31 ,       0,       0,       0,       0