datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,07 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 5:30:00,31 ,0.572712,20.54962,7.471815,4.348481
sgpcmbeC1.c1,2001,07 6:30:00,31 ,31.44058, 101.021,56.46524,15.61104
sgpcmbeC1.c1,2001,07 7:30:00,31 ,65.43687,180.6045,107.9863,37.66464
sgpcmbeC1.c1,2001,07 8:30:00,31 ,77.93877,269.9174,142.1989, 55.2208
sgpcmbeC1.c1,2001,07 9:30:00,31 ,87.64482,389.3398,167.0174,88.38287
sgpcmbeC1.c1,2001,0710:30:00,31 ,90.77668,394.0502,187.5142,105.1432
sgpcmbeC1.c1,2001,0711:30:00,31 ,95.29347,478.7675,198.8502,105.3206
sgpcmbeC1.c1,2001,0712:30:00,30 ,95.57757,462.0959, 223.658,113.7674
sgpcmbeC1.c1,2001,0713:30:00,31 ,97.65398,461.6549,218.9978,112.4993
sgpcmbeC1.c1,2001,0714:30:00,31 ,99.81311,427.3971, 200.126,94.12557
sgpcmbeC1.c1,2001,0715:30:00,31 ,87.86333,361.4207,175.7232,78.75662
sgpcmbeC1.c1,2001,0716:30:00,31 ,87.30384,293.7094, 147.193,59.27847
sgpcmbeC1.c1,2001,0717:30:00,31 ,68.56496, 198.349,108.6134,35.25445
sgpcmbeC1.c1,2001,0718:30:00,31 ,16.37252,98.04096,62.07982,16.08863
sgpcmbeC1.c1,2001,0719:30:00,31 ,       0,21.53099,13.12167, 4.17549
sgpcmbeC1.c1,2001,0720:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0721:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0722:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0723:30:00,27 ,       0,       0,       0,       0