datastream, year, month, tod,n, min, max, mean, std
twpcmbeC2.c1,2004,02 0:30:00,23 ,       0,40.80223,15.22385,11.38971
twpcmbeC2.c1,2004,02 1:30:00,23 ,       0,73.19423,20.18854,21.00717
twpcmbeC2.c1,2004,02 2:30:00,23 ,       0, 64.6326,20.79577,19.88142
twpcmbeC2.c1,2004,02 3:30:00,24 ,       0,258.7889,28.11202,51.78795
twpcmbeC2.c1,2004,02 4:30:00,24 ,0.013179,155.4757,28.88765, 39.7916
twpcmbeC2.c1,2004,02 5:30:00,24 ,0.011756,252.4432,42.03379,64.91552
twpcmbeC2.c1,2004,02 6:30:00,23 ,0.022945,246.6229,34.92026,54.46485
twpcmbeC2.c1,2004,02 7:30:00,22 ,       0,100.1968,21.44373,24.72032
twpcmbeC2.c1,2004,02 8:30:00,23 ,0.534444,254.3777, 37.5308, 62.5289
twpcmbeC2.c1,2004,02 9:30:00,23 ,       0,222.3252,25.79983,45.40487
twpcmbeC2.c1,2004,0210:30:00,23 ,       0,45.11023,18.01815,15.44769
twpcmbeC2.c1,2004,0211:30:00,23 ,       0,146.5503,19.29607,31.67942
twpcmbeC2.c1,2004,0212:30:00,24 ,0.030992, 144.529,22.32168,32.80232
twpcmbeC2.c1,2004,0213:30:00,23 ,       0,99.69246,24.11763,28.40183
twpcmbeC2.c1,2004,0214:30:00,23 ,0.710887,103.9195,22.60159,23.53255
twpcmbeC2.c1,2004,0215:30:00,24 ,0.276942,85.94077,21.29606,24.30452
twpcmbeC2.c1,2004,0216:30:00,24 ,0.175182,81.11648,22.99966,23.05847
twpcmbeC2.c1,2004,0217:30:00,24 ,1.068628,93.21039,25.25517, 24.8412
twpcmbeC2.c1,2004,0218:30:00,24 ,2.239742,108.9769,23.21627,27.99448
twpcmbeC2.c1,2004,0219:30:00,24 ,       0,77.46885,23.13867,21.06637
twpcmbeC2.c1,2004,0220:30:00,23 ,       0,155.6998,25.87147,34.59567
twpcmbeC2.c1,2004,0221:30:00,22 ,0.046692,175.9411,29.87583,46.73892
twpcmbeC2.c1,2004,0222:30:00,22 ,0.260065,115.4962,23.45963, 33.2991
twpcmbeC2.c1,2004,0223:30:00,23 ,0.004535,121.6595,20.40726,28.70313