datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,02 0:30:00,14 , 0.12084,3.214279,1.694413,0.972869
sgpcmbeC1.c1,2006,02 1:30:00,16 ,       0,3.454291,1.515933,1.129846
sgpcmbeC1.c1,2006,02 2:30:00,18 ,       0,3.590504,1.808544,1.212597
sgpcmbeC1.c1,2006,02 3:30:00,21 ,       0,3.384973,1.517768,1.322225
sgpcmbeC1.c1,2006,02 4:30:00,23 ,       0,3.461311,1.612172,1.268588
sgpcmbeC1.c1,2006,02 5:30:00,22 ,       0,3.204716,1.692429,1.073128
sgpcmbeC1.c1,2006,02 6:30:00,24 ,       0,3.316129,1.490952,1.110463
sgpcmbeC1.c1,2006,02 7:30:00,28 ,0.169038,31.89136, 6.70958,8.628834
sgpcmbeC1.c1,2006,02 8:30:00,28 ,0.144728,181.6205,75.25984, 61.2908
sgpcmbeC1.c1,2006,02 9:30:00,28 ,0.215977,364.5556,176.0762,140.3786
sgpcmbeC1.c1,2006,0210:30:00,28 ,0.469742,492.6392,275.9836,203.5234
sgpcmbeC1.c1,2006,0211:30:00,28 ,0.465256,584.8652,345.4883,227.5245
sgpcmbeC1.c1,2006,0212:30:00,28 ,1.238113,631.8418,368.6089, 244.288
sgpcmbeC1.c1,2006,0213:30:00,28 , 0.39473, 616.075,365.3826,224.9005
sgpcmbeC1.c1,2006,0214:30:00,28 ,0.368729,539.8995,342.9252,193.3756
sgpcmbeC1.c1,2006,0215:30:00,28 ,0.363976,426.2363,247.9635,150.4453
sgpcmbeC1.c1,2006,0216:30:00,28 ,0.089958,256.3649,135.0571,90.05351
sgpcmbeC1.c1,2006,0217:30:00,28 ,0.019659,84.53987, 31.9801,26.83658
sgpcmbeC1.c1,2006,0218:30:00,26 ,0.039404, 4.90751,1.774459,1.242871
sgpcmbeC1.c1,2006,0219:30:00,17 ,       0,3.464286, 1.70204,1.157068
sgpcmbeC1.c1,2006,0220:30:00,14 ,       0,3.215235,1.780377,1.057103
sgpcmbeC1.c1,2006,0221:30:00,14 , 0.12892,3.551853,2.021466,1.081256
sgpcmbeC1.c1,2006,0222:30:00,14 ,0.114719,3.410932,1.970915,1.048174
sgpcmbeC1.c1,2006,0223:30:00,15 ,0.292025,3.030703,1.695399,0.940519