datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,01 0:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 2:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,01 7:30:00,31 ,       0,9.008509,1.914293,1.960437
sgpcmbeC1.c1,2003,01 8:30:00,31 ,0.053123,50.35844,28.69365,  18.349
sgpcmbeC1.c1,2003,01 9:30:00,31 ,0.103134,93.40392,34.97973,25.25864
sgpcmbeC1.c1,2003,0110:30:00,31 ,0.221996,127.2276,41.74163,35.56459
sgpcmbeC1.c1,2003,0111:30:00,31 ,0.345847,190.6372,46.57625,53.75023
sgpcmbeC1.c1,2003,0112:30:00,31 ,0.385871,195.7011,31.37885,49.77651
sgpcmbeC1.c1,2003,0113:30:00,31 ,0.389796,184.3219,47.34927,59.22615
sgpcmbeC1.c1,2003,0114:30:00,31 ,0.292459,114.4714,40.16507,32.92477
sgpcmbeC1.c1,2003,0115:30:00,31 ,0.031126,78.24051,35.76511,22.72022
sgpcmbeC1.c1,2003,0116:30:00,31 ,0.035786,80.81636,36.32591,24.12114
sgpcmbeC1.c1,2003,0117:30:00,31 ,0.001922,29.82655,8.089233,8.129178
sgpcmbeC1.c1,2003,0118:30:00,31 ,       0,0.008719,0.000281,0.001566
sgpcmbeC1.c1,2003,0119:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0120:30:00,27 ,       0,0.391456,0.014498,0.075336
sgpcmbeC1.c1,2003,0121:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0122:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0123:30:00,24 ,       0,       0,       0,       0