datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,04 0:30:00,19 ,       0,0.050115,0.002638,0.011497
sgpcmbeC1.c1,1999,04 1:30:00,19 ,       0, 0.35028,0.018436, 0.08036
sgpcmbeC1.c1,1999,04 2:30:00,19 ,       0,0.683112,0.035953,0.156717
sgpcmbeC1.c1,1999,04 3:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 4:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 5:30:00,19 ,       0,1.240686,0.199088,0.332074
sgpcmbeC1.c1,1999,04 6:30:00,19 ,2.381083,43.03966,23.58246,10.04769
sgpcmbeC1.c1,1999,04 7:30:00,19 ,26.94124,124.4055,71.47789,23.01783
sgpcmbeC1.c1,1999,04 8:30:00,18 ,32.86071,230.4323,117.6725, 63.0896
sgpcmbeC1.c1,1999,04 9:30:00,18 ,36.78609, 325.531,146.1194,85.84472
sgpcmbeC1.c1,1999,0410:30:00,18 ,65.12312,395.8428,167.8627,108.6672
sgpcmbeC1.c1,1999,0411:30:00,18 , 32.4486,403.5781,182.3525,112.2454
sgpcmbeC1.c1,1999,0412:30:00,18 ,81.97656,478.9337,212.8174,124.3415
sgpcmbeC1.c1,1999,0413:30:00,18 , 65.9351,441.7282,192.9775,123.2475
sgpcmbeC1.c1,1999,0414:30:00,18 ,33.79174,454.5742,190.5979,110.2236
sgpcmbeC1.c1,1999,0415:30:00,18 ,16.40319,362.7299,182.5468,97.26082
sgpcmbeC1.c1,1999,0416:30:00,18 , 15.4369,258.8495,138.8992,67.39738
sgpcmbeC1.c1,1999,0417:30:00,18 ,17.94898,157.3162, 90.4024,40.49387
sgpcmbeC1.c1,1999,0418:30:00,18 ,2.755483,51.26447, 30.2185,13.59923
sgpcmbeC1.c1,1999,0419:30:00,18 ,       0,1.863585, 0.38219,0.509631
sgpcmbeC1.c1,1999,0420:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0421:30:00,18 ,       0,0.192256,0.010681,0.045315
sgpcmbeC1.c1,1999,0422:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0423:30:00,18 ,       0,       0,       0,       0