datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,02 0:30:00,26 ,       0,0.044759,0.002529,0.009546
sgpcmbeC1.c1,1999,02 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 2:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 3:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 5:30:00,26 ,       0,0.022274,0.000906,0.004365
sgpcmbeC1.c1,1999,02 6:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 7:30:00,26 , 0.00144,41.58169,9.504948,11.86535
sgpcmbeC1.c1,1999,02 8:30:00,26 ,0.023026,212.2043,84.33011,75.07172
sgpcmbeC1.c1,1999,02 9:30:00,26 , 0.12756,399.7371,190.4458,151.2444
sgpcmbeC1.c1,1999,0210:30:00,26 ,   0.333,555.2838,297.0166,213.6505
sgpcmbeC1.c1,1999,0211:30:00,26 ,0.640854,657.2799,367.3717,247.0757
sgpcmbeC1.c1,1999,0212:30:00,26 ,0.184738,699.2151,405.7298,247.2268
sgpcmbeC1.c1,1999,0213:30:00,26 ,0.270401,673.8766,396.7642,234.4434
sgpcmbeC1.c1,1999,0214:30:00,26 ,0.015671,587.2866,352.9736,205.6237
sgpcmbeC1.c1,1999,0215:30:00,26 ,0.007889,450.4929,269.5094,145.9393
sgpcmbeC1.c1,1999,0216:30:00,26 ,0.025112,277.1765,143.2807,92.20479
sgpcmbeC1.c1,1999,0217:30:00,26 ,0.010655,97.85521,37.79968,30.81143
sgpcmbeC1.c1,1999,0218:30:00,26 ,       0,2.828025,0.480476,0.816435
sgpcmbeC1.c1,1999,0219:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0220:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0221:30:00,26 ,       0,0.023582,0.002233,0.006553
sgpcmbeC1.c1,1999,0222:30:00,26 ,       0,0.090948,0.005595,0.020426
sgpcmbeC1.c1,1999,0223:30:00,26 ,       0,       0,       0,       0