datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,05 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,05 2:30:00,31 ,       0,0.741164,0.023909,0.133117
sgpcmbeC1.c1,1998,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,05 4:30:00,31 ,       0,0.653812,0.039445,0.153077
sgpcmbeC1.c1,1998,05 5:30:00,31 ,0.987875,24.06759, 9.61368,5.797369
sgpcmbeC1.c1,1998,05 6:30:00,31 ,23.04358,102.6211,67.53032,20.36232
sgpcmbeC1.c1,1998,05 7:30:00,31 ,22.29501, 286.955,135.1493,60.07133
sgpcmbeC1.c1,1998,05 8:30:00,30 ,  44.446,511.4041,187.1433,91.63089
sgpcmbeC1.c1,1998,05 9:30:00,30 ,71.29713,491.4508,224.8189,103.2381
sgpcmbeC1.c1,1998,0510:30:00,31 ,74.42669,522.5142,271.1024,129.8173
sgpcmbeC1.c1,1998,0511:30:00,31 ,74.94113,811.8119,288.7275,155.6958
sgpcmbeC1.c1,1998,0512:30:00,30 ,74.57621,535.7557,293.4335,120.4471
sgpcmbeC1.c1,1998,0513:30:00,31 ,74.23731,854.0508,305.7326,153.6403
sgpcmbeC1.c1,1998,0514:30:00,31 ,74.59702,679.5356,288.2046,134.9567
sgpcmbeC1.c1,1998,0515:30:00,31 ,73.23537, 627.401,237.8636,108.5431
sgpcmbeC1.c1,1998,0516:30:00,31 , 66.9504,483.0496,186.7961,83.81689
sgpcmbeC1.c1,1998,0517:30:00,31 ,24.44494,342.5078,127.5916,57.21777
sgpcmbeC1.c1,1998,0518:30:00,31 ,7.116062,107.6272,60.28749,20.50566
sgpcmbeC1.c1,1998,0519:30:00,31 ,       0, 24.3719,8.759351,4.786186
sgpcmbeC1.c1,1998,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0521:30:00,31 ,       0,0.129041,0.004163,0.023177
sgpcmbeC1.c1,1998,0522:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0523:30:00,31 ,       0,       0,       0,       0