datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,06 0:30:00,30 ,       0,0.101276,0.003376, 0.01849
sgpcmbeC1.c1,1999,06 1:30:00,30 ,       0,0.081993,0.002733, 0.01497
sgpcmbeC1.c1,1999,06 2:30:00,30 ,       0,0.230146,0.007672,0.042019
sgpcmbeC1.c1,1999,06 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,06 5:30:00,30 ,       0, 10.2629,4.056249,3.221695
sgpcmbeC1.c1,1999,06 6:30:00,30 ,0.441526,21.29605,9.632144,5.842309
sgpcmbeC1.c1,1999,06 7:30:00,30 ,       0,38.15373,14.70318,9.863416
sgpcmbeC1.c1,1999,06 8:30:00,30 ,3.061796,40.03415,18.22925,11.21758
sgpcmbeC1.c1,1999,06 9:30:00,30 ,5.300622,54.87633,  23.324,13.60335
sgpcmbeC1.c1,1999,0610:30:00,30 ,0.113282,52.54089,25.19206,15.39307
sgpcmbeC1.c1,1999,0611:30:00,30 ,0.085445,58.45974,25.11856,18.29888
sgpcmbeC1.c1,1999,0612:30:00,30 ,0.495052,59.45484,28.64658,19.29991
sgpcmbeC1.c1,1999,0613:30:00,30 ,1.147876,65.84222, 27.9952,20.24255
sgpcmbeC1.c1,1999,0614:30:00,30 ,1.859086, 62.4813,27.50279,17.33229
sgpcmbeC1.c1,1999,0615:30:00,30 ,1.244707,46.87615, 22.9597,14.89385
sgpcmbeC1.c1,1999,0616:30:00,30 ,0.828096,45.62004,24.65869, 12.0461
sgpcmbeC1.c1,1999,0617:30:00,30 ,0.741642,37.92748,16.62666, 9.99281
sgpcmbeC1.c1,1999,0618:30:00,30 ,       0,31.30062,10.65813,6.262054
sgpcmbeC1.c1,1999,0619:30:00,30 ,       0,11.27745,4.762351,3.380229
sgpcmbeC1.c1,1999,0620:30:00,30 ,       0,1.457194,0.064163,0.276595
sgpcmbeC1.c1,1999,0621:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0622:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0623:30:00,30 ,       0,       0,       0,       0