datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,06 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,06 5:30:00,30 ,1.342158, 41.7522,20.34916, 11.0895
sgpcmbeC1.c1,2003,06 6:30:00,30 ,6.572146,81.51355,43.19798,21.00167
sgpcmbeC1.c1,2003,06 7:30:00,30 ,6.211352,167.1513,69.01933,39.32874
sgpcmbeC1.c1,2003,06 8:30:00,30 ,12.16527,207.3309,86.12761,50.65608
sgpcmbeC1.c1,2003,06 9:30:00,30 ,24.23425,  315.55,96.09665,71.83311
sgpcmbeC1.c1,2003,0610:30:00,30 ,26.94314, 362.676,139.7749,100.0257
sgpcmbeC1.c1,2003,0611:30:00,30 ,15.95825,326.6744,140.5511,99.90524
sgpcmbeC1.c1,2003,0612:30:00,30 ,3.425603, 338.624,132.5892,109.7261
sgpcmbeC1.c1,2003,0613:30:00,30 ,12.73367,338.2762,145.6905,111.1802
sgpcmbeC1.c1,2003,0614:30:00,30 ,27.05079,298.8843,149.9577,92.91167
sgpcmbeC1.c1,2003,0615:30:00,30 ,43.06466, 293.897,136.3293,81.45376
sgpcmbeC1.c1,2003,0616:30:00,30 ,15.99343,189.9418,89.04186,45.82576
sgpcmbeC1.c1,2003,0617:30:00,30 ,5.652128,180.3183,78.52663,35.47467
sgpcmbeC1.c1,2003,0618:30:00,30 ,0.896458,105.8632,47.01233,23.81096
sgpcmbeC1.c1,2003,0619:30:00,30 ,1.177837,32.93898,19.06944,9.043741
sgpcmbeC1.c1,2003,0620:30:00,30 ,       0,8.998086,0.401199,1.654132
sgpcmbeC1.c1,2003,0621:30:00,30 ,       0,0.681649,0.022722,0.124452
sgpcmbeC1.c1,2003,0622:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0623:30:00,30 ,       0,       0,       0,       0