datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,05 5:30:00,31 ,  0.1073,24.72384, 8.58908,5.411677
sgpcmbeC1.c1,2003,05 6:30:00,31 ,1.589287,102.4869,59.44296,24.95412
sgpcmbeC1.c1,2003,05 7:30:00,31 , 0.26464,205.3198,112.6789, 48.6631
sgpcmbeC1.c1,2003,05 8:30:00,31 , 14.7079,334.2821,171.3282,89.70767
sgpcmbeC1.c1,2003,05 9:30:00,31 ,77.54811,414.6662, 224.392,112.0668
sgpcmbeC1.c1,2003,0510:30:00,31 ,82.26003,465.6632,255.4655,121.4074
sgpcmbeC1.c1,2003,0511:30:00,31 , 88.3934,528.7436,254.5985,119.4152
sgpcmbeC1.c1,2003,0512:30:00,31 ,88.35417,672.2722,251.9254,146.7483
sgpcmbeC1.c1,2003,0513:30:00,31 ,86.63992,536.5181,274.3921,140.6107
sgpcmbeC1.c1,2003,0514:30:00,31 , 83.4554,485.8664,263.2298,124.7031
sgpcmbeC1.c1,2003,0515:30:00,31 ,80.01714,404.0268,228.6244,101.8031
sgpcmbeC1.c1,2003,0516:30:00,31 ,16.07747,312.0375,176.9979,72.00384
sgpcmbeC1.c1,2003,0517:30:00,31 ,37.65734,192.4807,  123.46,37.07973
sgpcmbeC1.c1,2003,0518:30:00,31 ,8.408021,83.67455,59.28236,14.42384
sgpcmbeC1.c1,2003,0519:30:00,31 ,0.445051,18.94411,7.808444,4.035355
sgpcmbeC1.c1,2003,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0522:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0523:30:00,31 ,       0,       0,       0,       0