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 ,0.327851,15.82944,6.274795,4.396039
sgpcmbeC1.c1,2002,06 6:30:00,29 ,0.099445,140.9334,72.98594,46.92682
sgpcmbeC1.c1,2002,06 7:30:00,29 ,0.073806,327.3069,184.2898,118.0322
sgpcmbeC1.c1,2002,06 8:30:00,29 ,0.763224,516.8628,316.8374,169.2194
sgpcmbeC1.c1,2002,06 9:30:00,29 ,0.039731,686.1427,441.7503,215.1453
sgpcmbeC1.c1,2002,0610:30:00,29 ,0.203423,819.4528,503.9591, 265.301
sgpcmbeC1.c1,2002,0611:30:00,29 ,0.288445, 901.997,581.3321,273.4483
sgpcmbeC1.c1,2002,0612:30:00,29 ,2.228241,943.1761,551.8874,288.9817
sgpcmbeC1.c1,2002,0613:30:00,29 ,0.002874,921.2232,548.1004,274.1712
sgpcmbeC1.c1,2002,0614:30:00,29 ,0.518326,838.0131,533.1863,220.2113
sgpcmbeC1.c1,2002,0615:30:00,29 ,0.011909,704.5306,437.7348,203.4174
sgpcmbeC1.c1,2002,0616:30:00,29 ,0.163103,533.2977,307.3658,164.6058
sgpcmbeC1.c1,2002,0617:30:00,29 ,       0,342.1991,190.2054,104.9092
sgpcmbeC1.c1,2002,0618:30:00,29 ,0.011386,151.7328,74.54878,45.12741
sgpcmbeC1.c1,2002,0619:30:00,29 ,       0, 17.8163,7.228291,5.252132
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