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 ,       0,19.61435,2.280593,4.891096
sgpcmbeC1.c1,2006,03 7:30:00,30 ,       0,57.79613,22.13563,23.08288
sgpcmbeC1.c1,2006,03 8:30:00,30 ,       0,68.17513, 30.5031,26.97775
sgpcmbeC1.c1,2006,03 9:30:00,30 ,       0,157.4436,44.95886,41.04319
sgpcmbeC1.c1,2006,0310:30:00,30 ,0.013254, 196.462,53.40354,52.12663
sgpcmbeC1.c1,2006,0311:30:00,31 ,       0,221.6756,54.19254,65.98448
sgpcmbeC1.c1,2006,0312:30:00,31 , 0.00269, 241.494,50.40094,74.02285
sgpcmbeC1.c1,2006,0313:30:00,31 ,       0, 208.172,56.49334,63.85829
sgpcmbeC1.c1,2006,0314:30:00,31 ,0.072198,218.7467,51.29364,54.16586
sgpcmbeC1.c1,2006,0315:30:00,31 ,       0,124.6151,44.00921,36.80579
sgpcmbeC1.c1,2006,0316:30:00,31 ,       0,142.5865,41.81591,37.05378
sgpcmbeC1.c1,2006,0317:30:00,31 ,       0,72.53613,24.92079,25.03599
sgpcmbeC1.c1,2006,0318:30:00,31 ,       0,20.77176,5.485793,6.502031
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