datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,06 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 1:30:00,29 ,       0,0.002809,0.000097,0.000522
sgpcmbeC1.c1,2002,06 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 4:30:00,29 ,       0,0.045318,0.003761,0.009507
sgpcmbeC1.c1,2002,06 5:30:00,29 ,0.612404,32.36026,23.13483,7.741663
sgpcmbeC1.c1,2002,06 6:30:00,29 ,12.14321, 191.064,139.8983,52.99603
sgpcmbeC1.c1,2002,06 7:30:00,29 ,5.039897,398.5211,294.4553,120.1046
sgpcmbeC1.c1,2002,06 8:30:00,29 ,3.532606,603.4491,476.0109,159.2947
sgpcmbeC1.c1,2002,06 9:30:00,29 ,11.02395, 797.923,631.1618,202.7592
sgpcmbeC1.c1,2002,0610:30:00,29 ,79.07549, 913.798,736.1514,226.1828
sgpcmbeC1.c1,2002,0611:30:00,29 ,90.64883,997.7308, 835.534,234.1788
sgpcmbeC1.c1,2002,0612:30:00,29 , 170.321,1034.999,   826.3,218.8464
sgpcmbeC1.c1,2002,0613:30:00,29 ,17.13513,1008.421,807.8124,235.9019
sgpcmbeC1.c1,2002,0614:30:00,29 ,3.954185,922.5993,755.2534,211.3993
sgpcmbeC1.c1,2002,0615:30:00,29 ,11.24719,795.2548,638.6861,177.3286
sgpcmbeC1.c1,2002,0616:30:00,29 ,6.973544,607.7994,472.5171,156.0977
sgpcmbeC1.c1,2002,0617:30:00,29 ,22.57534,406.2944,302.4077,114.7616
sgpcmbeC1.c1,2002,0618:30:00,29 ,  0.4728,224.5214,141.4165,58.40374
sgpcmbeC1.c1,2002,0619:30:00,29 ,       0,36.91408,23.87111,10.68032
sgpcmbeC1.c1,2002,0620:30:00,29 ,       0,0.338411,0.046651,0.082255
sgpcmbeC1.c1,2002,0621:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0622:30:00,29 ,       0,0.419913, 0.01448,0.077976
sgpcmbeC1.c1,2002,0623:30:00,29 ,       0,       0,       0,       0