datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,01 0:30:00,8 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 1:30:00,9 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 2:30:00,8 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 3:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 4:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 5:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 7:30:00,31 ,       0,6.132539,3.266788,1.501329
sgpcmbeC1.c1,2001,01 8:30:00,31 ,3.740041,79.40302,41.69413,18.21221
sgpcmbeC1.c1,2001,01 9:30:00,31 ,10.53083,181.6412,86.55781,43.63206
sgpcmbeC1.c1,2001,0110:30:00,31 , 31.8947,285.5136,125.5681,72.66041
sgpcmbeC1.c1,2001,0111:30:00,31 ,50.84704,375.4856,146.1226,95.50311
sgpcmbeC1.c1,2001,0112:30:00,31 ,47.87214,382.6772, 163.739,107.6238
sgpcmbeC1.c1,2001,0113:30:00,31 ,54.90481, 324.131,156.1495,98.04827
sgpcmbeC1.c1,2001,0114:30:00,31 ,58.43956, 302.163,133.3651, 75.2022
sgpcmbeC1.c1,2001,0115:30:00,31 ,43.69804,256.4701,95.37653,49.44609
sgpcmbeC1.c1,2001,0116:30:00,31 ,16.43919,111.8113,52.13782,20.29522
sgpcmbeC1.c1,2001,0117:30:00,31 ,0.433683,24.17815,10.88665,6.067996
sgpcmbeC1.c1,2001,0118:30:00,30 ,       0, 0.03958,0.001319,0.007226
sgpcmbeC1.c1,2001,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0120:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0121:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0122:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0123:30:00,10 ,       0,       0,       0,       0