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,       0,       0
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,       0,       0
sgpcmbeC1.c1,2002,06 5:30:00,29 ,       0,29.32544,21.10315,7.461332
sgpcmbeC1.c1,2002,06 6:30:00,29 ,6.558381,65.43731,47.69376, 15.1232
sgpcmbeC1.c1,2002,06 7:30:00,29 ,3.112462,82.35393, 54.6946,17.65258
sgpcmbeC1.c1,2002,06 8:30:00,29 ,2.936681,243.6999,81.66554,52.57169
sgpcmbeC1.c1,2002,06 9:30:00,29 ,4.374426,246.5508,91.67483,63.34741
sgpcmbeC1.c1,2002,0610:30:00,29 ,16.55219, 291.406,113.1075,94.92185
sgpcmbeC1.c1,2002,0611:30:00,29 , 12.5649,308.8597,114.1333,99.25264
sgpcmbeC1.c1,2002,0612:30:00,29 ,3.082406, 406.766,155.6119,131.0105
sgpcmbeC1.c1,2002,0613:30:00,29 ,15.76581, 353.334,148.0044,119.3358
sgpcmbeC1.c1,2002,0614:30:00,29 ,2.775464,307.8472,141.5453,102.1884
sgpcmbeC1.c1,2002,0615:30:00,29 ,6.009827,241.3688,114.6296,72.51154
sgpcmbeC1.c1,2002,0616:30:00,29 ,2.103837,245.8433,91.62566,56.02622
sgpcmbeC1.c1,2002,0617:30:00,29 ,5.133605,138.2626,68.65581, 33.0691
sgpcmbeC1.c1,2002,0618:30:00,29 ,       0,85.60189, 49.1754,20.44833
sgpcmbeC1.c1,2002,0619:30:00,29 ,       0, 32.8138, 21.4455,9.275966
sgpcmbeC1.c1,2002,0620:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0621:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0622:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0623:30:00,29 ,       0,       0,       0,       0