datastream, year, month, tod,n, min, max, mean, std
twpcmbeC2.c1,2004,02 0:30:00,23 ,       0,41.40509,15.12543,12.30466
twpcmbeC2.c1,2004,02 1:30:00,23 ,       0,70.58591,19.12529,  19.662
twpcmbeC2.c1,2004,02 2:30:00,23 ,       0,79.50309,19.40664,20.23203
twpcmbeC2.c1,2004,02 3:30:00,24 ,       0,136.4075,21.16717,28.43343
twpcmbeC2.c1,2004,02 4:30:00,24 ,0.105977,171.7135, 27.6466,37.82913
twpcmbeC2.c1,2004,02 5:30:00,24 ,0.125516,82.07265,24.87285,24.98793
twpcmbeC2.c1,2004,02 6:30:00,23 ,0.165651,93.27832,23.40227,26.74143
twpcmbeC2.c1,2004,02 7:30:00,22 ,       0,60.06429,17.06783,15.58061
twpcmbeC2.c1,2004,02 8:30:00,23 ,1.851802,149.7396,27.13101,35.70431
twpcmbeC2.c1,2004,02 9:30:00,23 ,       0,109.1237,23.33804,26.54243
twpcmbeC2.c1,2004,0210:30:00,23 ,       0,61.96737, 20.3104,17.86089
twpcmbeC2.c1,2004,0211:30:00,23 ,       0,70.39186,16.62065,20.14294
twpcmbeC2.c1,2004,0212:30:00,24 , 0.31908,57.43969, 20.9842,17.89962
twpcmbeC2.c1,2004,0213:30:00,23 ,       0,90.19339,27.23939,26.63312
twpcmbeC2.c1,2004,0214:30:00,23 ,1.670244,98.68298,27.28449,23.76178
twpcmbeC2.c1,2004,0215:30:00,24 , 0.89037,83.44088,23.00941, 22.9056
twpcmbeC2.c1,2004,0216:30:00,24 ,0.584983,78.56388, 25.2084,23.45661
twpcmbeC2.c1,2004,0217:30:00,24 ,1.691054,84.19756,22.85209,23.37749
twpcmbeC2.c1,2004,0218:30:00,24 ,1.908554,99.94643, 20.8177,24.86622
twpcmbeC2.c1,2004,0219:30:00,24 ,       0,70.04059,21.85291,21.31952
twpcmbeC2.c1,2004,0220:30:00,23 ,       0,110.4052,20.82641, 24.9926
twpcmbeC2.c1,2004,0221:30:00,22 , 0.22745,98.35187,22.84891, 30.2446
twpcmbeC2.c1,2004,0222:30:00,22 ,0.640709,73.37359,18.08819,21.26726
twpcmbeC2.c1,2004,0223:30:00,23 ,0.027674,62.84254, 16.4838,18.81654