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 ,0.087986, 10.5482,5.791884,3.488567
sgpcmbeC1.c1,2003,06 6:30:00,30 ,2.803378,52.79681, 30.0404,16.00292
sgpcmbeC1.c1,2003,06 7:30:00,30 ,12.88202,95.48042,59.36231,27.49699
sgpcmbeC1.c1,2003,06 8:30:00,30 ,19.88426,129.7823, 87.7833,35.80136
sgpcmbeC1.c1,2003,06 9:30:00,30 ,22.01098,154.8873,112.8101,41.46342
sgpcmbeC1.c1,2003,0610:30:00,30 ,28.83413,176.4502,126.5799,45.41203
sgpcmbeC1.c1,2003,0611:30:00,30 , 31.4701,181.0318, 139.296,42.71537
sgpcmbeC1.c1,2003,0612:30:00,30 ,51.55651,185.6111,145.7113,38.82422
sgpcmbeC1.c1,2003,0613:30:00,30 ,20.75505, 183.078,140.9586,41.22698
sgpcmbeC1.c1,2003,0614:30:00,30 ,22.69968,168.8311,130.6999,42.64957
sgpcmbeC1.c1,2003,0615:30:00,30 , 7.90665, 154.833,114.4553, 40.3673
sgpcmbeC1.c1,2003,0616:30:00,30 , 10.3909,127.1146,91.60859,39.52045
sgpcmbeC1.c1,2003,0617:30:00,30 ,1.946421,95.26791,62.72359,28.00468
sgpcmbeC1.c1,2003,0618:30:00,30 ,0.010684,53.29757,30.83182, 15.6314
sgpcmbeC1.c1,2003,0619:30:00,30 ,0.105583,18.46862,5.787884,3.972008
sgpcmbeC1.c1,2003,0620:30:00,30 ,       0,0.699002,  0.0233, 0.12762
sgpcmbeC1.c1,2003,0621:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0622:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0623:30:00,30 ,       0,       0,       0,       0