datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,03 0:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 3:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 4:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 5:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 6:30:00,31 ,       0,14.82767,4.189148,4.357588
sgpcmbeC1.c1,2006,03 7:30:00,30 ,4.467238, 54.3811,18.11933, 11.6453
sgpcmbeC1.c1,2006,03 8:30:00,30 ,1.334127,87.78425,22.83623,22.02666
sgpcmbeC1.c1,2006,03 9:30:00,30 ,1.564555,78.22858, 24.2542,20.87139
sgpcmbeC1.c1,2006,0310:30:00,30 ,0.652314,111.8118,34.77072,31.35296
sgpcmbeC1.c1,2006,0311:30:00,31 , 0.74184,107.7401,29.89594,26.08296
sgpcmbeC1.c1,2006,0312:30:00,31 ,0.803271,138.4884,34.03101,33.35286
sgpcmbeC1.c1,2006,0313:30:00,31 ,0.664294,153.0115,43.74849,45.86021
sgpcmbeC1.c1,2006,0314:30:00,31 ,0.764569,96.99718,31.31286,29.72051
sgpcmbeC1.c1,2006,0315:30:00,31 ,1.698572,71.73138,21.62367,17.38663
sgpcmbeC1.c1,2006,0316:30:00,31 ,3.285432,87.20831, 22.9813,21.91662
sgpcmbeC1.c1,2006,0317:30:00,31 ,2.098129, 41.7443,17.37176,10.10101
sgpcmbeC1.c1,2006,0318:30:00,31 ,       0,26.89329,10.11295,6.163571
sgpcmbeC1.c1,2006,0319:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0320:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0321:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0322:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0323:30:00,25 ,       0,       0,       0,       0