datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,02 0:30:00,15 ,       0,0.208448,0.024707,0.065785
sgpcmbeC1.c1,2006,02 1:30:00,16 ,       0,0.021621,0.001351,0.005405
sgpcmbeC1.c1,2006,02 2:30:00,18 ,       0,0.019944,0.001108,0.004701
sgpcmbeC1.c1,2006,02 3:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,02 4:30:00,24 ,       0,0.287811,0.012378,0.058697
sgpcmbeC1.c1,2006,02 5:30:00,23 ,       0,0.641654,0.036656,0.136139
sgpcmbeC1.c1,2006,02 6:30:00,24 ,       0,0.017084,0.000712,0.003487
sgpcmbeC1.c1,2006,02 7:30:00,28 ,1.160525,18.99406,6.542488,5.278797
sgpcmbeC1.c1,2006,02 8:30:00,28 ,6.279707,78.92451,44.01068, 20.3093
sgpcmbeC1.c1,2006,02 9:30:00,28 ,14.67479,131.5475,85.93497, 32.6976
sgpcmbeC1.c1,2006,0210:30:00,28 ,27.96198,167.1672,119.3298, 41.6987
sgpcmbeC1.c1,2006,0211:30:00,28 ,33.96925,190.3373,143.4088,44.42952
sgpcmbeC1.c1,2006,0212:30:00,28 ,43.29033,192.2092,152.0837,42.02974
sgpcmbeC1.c1,2006,0213:30:00,28 ,40.17363,191.6955, 151.442,39.44541
sgpcmbeC1.c1,2006,0214:30:00,28 ,30.60027,173.3485,138.1083,36.16243
sgpcmbeC1.c1,2006,0215:30:00,28 ,28.88244,141.6173,109.1378,31.29739
sgpcmbeC1.c1,2006,0216:30:00,28 ,19.50126,97.09263,69.14602, 22.5364
sgpcmbeC1.c1,2006,0217:30:00,28 ,6.019633,43.22778,22.82396,11.04046
sgpcmbeC1.c1,2006,0218:30:00,24 ,       0,4.512828,0.875385,1.307147
sgpcmbeC1.c1,2006,0219:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0220:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0221:30:00,14 ,       0,0.007879,0.000563,0.002106
sgpcmbeC1.c1,2006,0222:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0223:30:00,16 ,       0,       0,       0,       0