datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,05 0:30:00,26 ,       0,403.3304,41.11004,100.9574
sgpcmbeC1.c1,2004,05 1:30:00,26 ,       0,794.1643, 57.6435,160.3831
sgpcmbeC1.c1,2004,05 2:30:00,27 ,       0,1980.227,155.6026,407.2267
sgpcmbeC1.c1,2004,05 3:30:00,26 ,       0,884.9205,105.7951,241.9412
sgpcmbeC1.c1,2004,05 4:30:00,26 ,       0,1833.903,134.8621,392.1641
sgpcmbeC1.c1,2004,05 5:30:00,26 ,       0,1228.836,87.88217,261.2133
sgpcmbeC1.c1,2004,05 6:30:00,26 ,       0,1601.241,105.7017,328.1847
sgpcmbeC1.c1,2004,05 7:30:00,27 ,       0,1795.524,160.9149,471.5122
sgpcmbeC1.c1,2004,05 8:30:00,27 ,       0,855.6445,75.39198,181.4417
sgpcmbeC1.c1,2004,05 9:30:00,27 ,       0,1405.853,85.90058,270.3397
sgpcmbeC1.c1,2004,0510:30:00,27 ,       0, 1353.83,80.72731,263.4408
sgpcmbeC1.c1,2004,0511:30:00,27 ,       0,483.2239,45.06252, 111.984
sgpcmbeC1.c1,2004,0512:30:00,27 ,       0,560.8789,52.72625,139.3327
sgpcmbeC1.c1,2004,0513:30:00,27 ,       0, 635.264,51.08342,143.0936
sgpcmbeC1.c1,2004,0514:30:00,27 ,       0,1702.508, 86.9979,330.5064
sgpcmbeC1.c1,2004,0515:30:00,27 ,       0,1530.213,80.79467,294.5842
sgpcmbeC1.c1,2004,0516:30:00,27 ,       0,1649.798,77.93836,315.5305
sgpcmbeC1.c1,2004,0517:30:00,27 ,       0,1740.017,75.78327,333.2574
sgpcmbeC1.c1,2004,0518:30:00,27 ,       0,1512.701,64.66719,289.8977
sgpcmbeC1.c1,2004,0519:30:00,27 ,       0,1008.948,50.09047,194.7792
sgpcmbeC1.c1,2004,0520:30:00,27 ,       0,674.5163,41.46417,137.7782
sgpcmbeC1.c1,2004,0521:30:00,27 ,       0,600.8328,46.36079,145.7072
sgpcmbeC1.c1,2004,0522:30:00,27 ,       0,898.8638,62.98782,204.8552
sgpcmbeC1.c1,2004,0523:30:00,26 ,       0,426.6947,24.95293,83.36519