datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,04 0:30:00,24 ,       0,3.008094,0.605421,0.812545
sgpcmbeC1.c1,2007,04 1:30:00,22 ,       0,2.501598, 0.65137,0.729642
sgpcmbeC1.c1,2007,04 2:30:00,24 ,       0,4.705023, 0.61328,1.083459
sgpcmbeC1.c1,2007,04 3:30:00,23 ,       0,4.353995,0.516395,1.042331
sgpcmbeC1.c1,2007,04 4:30:00,25 ,       0,1.991591,0.305665,0.540778
sgpcmbeC1.c1,2007,04 5:30:00,28 ,       0,4.776271,0.646916,1.029179
sgpcmbeC1.c1,2007,04 6:30:00,30 ,       0,77.39621,16.40812,20.71234
sgpcmbeC1.c1,2007,04 7:30:00,30 , 0.02932, 261.472,93.05023,91.57468
sgpcmbeC1.c1,2007,04 8:30:00,30 ,       0,462.6058,192.9775, 174.862
sgpcmbeC1.c1,2007,04 9:30:00,30 ,       0,640.6051,278.5065,265.3161
sgpcmbeC1.c1,2007,0410:30:00,30 ,       0,776.2203,364.6663, 340.623
sgpcmbeC1.c1,2007,0411:30:00,30 ,0.052742,863.1774,431.7496,354.2403
sgpcmbeC1.c1,2007,0412:30:00,30 ,       0, 896.817,426.3675, 373.264
sgpcmbeC1.c1,2007,0413:30:00,30 ,       0,867.4693,403.2426,  352.71
sgpcmbeC1.c1,2007,0414:30:00,30 ,       0,776.3726,374.1627, 316.028
sgpcmbeC1.c1,2007,0415:30:00,30 ,       0,634.0139,322.0754,264.8845
sgpcmbeC1.c1,2007,0416:30:00,30 ,       0,436.3968,217.9149,170.2458
sgpcmbeC1.c1,2007,0417:30:00,30 ,       0,238.8255,109.9645,91.90713
sgpcmbeC1.c1,2007,0418:30:00,30 ,       0,57.66312,  20.632,18.69098
sgpcmbeC1.c1,2007,0419:30:00,28 ,       0,2.540743,0.747429,0.810215
sgpcmbeC1.c1,2007,0420:30:00,27 ,       0,2.070582,0.708178,0.767667
sgpcmbeC1.c1,2007,0421:30:00,25 ,       0,2.224008,0.608862,0.780105
sgpcmbeC1.c1,2007,0422:30:00,26 ,       0,2.082229,0.551108,0.689877
sgpcmbeC1.c1,2007,0423:30:00,23 ,       0,1.724541,0.528056,0.604413