datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,08 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,08 5:30:00,31 ,       0,4.775918, 1.24845,1.319287
sgpcmbeC1.c1,2001,08 6:30:00,31 ,23.00846,88.09595,44.42871,16.70748
sgpcmbeC1.c1,2001,08 7:30:00,30 ,56.47284,263.1958,106.6649,46.33189
sgpcmbeC1.c1,2001,08 8:30:00,29 ,67.24851,360.4966,145.9369,62.11971
sgpcmbeC1.c1,2001,08 9:30:00,29 ,74.78789,378.2064,187.1249,  87.439
sgpcmbeC1.c1,2001,0810:30:00,29 ,81.17101,448.7208,209.5235,104.6414
sgpcmbeC1.c1,2001,0811:30:00,29 ,87.08175,421.2214,206.8726,82.53039
sgpcmbeC1.c1,2001,0812:30:00,29 ,90.53026,488.7939,230.5834,104.4963
sgpcmbeC1.c1,2001,0813:30:00,29 , 93.8391,500.2628,237.2297,113.0776
sgpcmbeC1.c1,2001,0814:30:00,29 ,90.02942,440.6732, 221.562,98.06847
sgpcmbeC1.c1,2001,0815:30:00,29 ,86.46337,325.1996,189.6615,68.46947
sgpcmbeC1.c1,2001,0816:30:00,29 ,16.09303,262.1154,144.2627,52.52313
sgpcmbeC1.c1,2001,0817:30:00,29 ,3.143102, 163.686,100.9726,29.93397
sgpcmbeC1.c1,2001,0818:30:00,31 ,       0,108.5185,50.70993,24.18161
sgpcmbeC1.c1,2001,0819:30:00,31 ,       0,16.11598,3.817978,3.678877
sgpcmbeC1.c1,2001,0820:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0821:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0822:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0823:30:00,31 ,       0,       0,       0,       0