datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,02 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 1:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 3:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 4:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 5:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 6:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,02 7:30:00,23 ,1.327698,34.22335,10.75904,8.057779
sgpcmbeC1.c1,1998,02 8:30:00,22 ,6.759932,33.65349,17.06898,8.484839
sgpcmbeC1.c1,1998,02 9:30:00,22 ,2.595922,74.17989,21.13125,16.53069
sgpcmbeC1.c1,1998,0210:30:00,22 ,0.747015, 83.0737,29.16782,24.09758
sgpcmbeC1.c1,1998,0211:30:00,23 ,0.583033,126.0705,30.88541,28.92585
sgpcmbeC1.c1,1998,0212:30:00,23 ,0.687488,97.41151,30.03782,27.58195
sgpcmbeC1.c1,1998,0213:30:00,22 , 0.83545,67.27625,25.83747,21.58995
sgpcmbeC1.c1,1998,0214:30:00,22 ,0.690055,84.98959,30.47679,23.23297
sgpcmbeC1.c1,1998,0215:30:00,23 ,1.628082,48.11779,22.28113,12.93131
sgpcmbeC1.c1,1998,0216:30:00,23 ,1.411793,47.08424,19.26017,12.72742
sgpcmbeC1.c1,1998,0217:30:00,22 ,5.166885,40.04377,15.96031,8.500582
sgpcmbeC1.c1,1998,0218:30:00,23 ,       0,13.33926,3.311497,3.166735
sgpcmbeC1.c1,1998,0219:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0220:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0221:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0222:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0223:30:00,25 ,       0,       0,       0,       0