datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,01 0:30:00,26 ,       0,93.14157,12.26362,27.32893
sgpcmbeC1.c1,2004,01 1:30:00,26 ,       0,119.8667, 11.4123,29.56548
sgpcmbeC1.c1,2004,01 2:30:00,25 ,       0,173.7507, 16.6208, 42.2118
sgpcmbeC1.c1,2004,01 3:30:00,25 ,       0,304.6304,27.31817,69.55699
sgpcmbeC1.c1,2004,01 4:30:00,25 ,       0,135.7228,15.91278, 35.8242
sgpcmbeC1.c1,2004,01 5:30:00,25 ,       0,191.2089, 19.6648,43.92297
sgpcmbeC1.c1,2004,01 6:30:00,25 ,       0,331.7647,25.40703,72.29279
sgpcmbeC1.c1,2004,01 7:30:00,26 ,       0,338.0756,29.92483,78.33444
sgpcmbeC1.c1,2004,01 8:30:00,25 ,       0,196.8325,25.55357, 55.9575
sgpcmbeC1.c1,2004,01 9:30:00,27 ,       0,176.0913,21.66959,44.11768
sgpcmbeC1.c1,2004,0110:30:00,28 ,       0,238.9865,17.09397,46.17134
sgpcmbeC1.c1,2004,0111:30:00,28 ,       0,208.5766,15.53027,41.37773
sgpcmbeC1.c1,2004,0112:30:00,28 ,       0,251.5155, 17.0827,48.46318
sgpcmbeC1.c1,2004,0113:30:00,28 ,       0,64.92179,8.755829, 16.8494
sgpcmbeC1.c1,2004,0114:30:00,27 ,       0, 405.652,17.93959,77.69889
sgpcmbeC1.c1,2004,0115:30:00,27 ,       0,65.95651,5.902885,13.60106
sgpcmbeC1.c1,2004,0116:30:00,27 ,       0,318.5701,18.33963,63.05298
sgpcmbeC1.c1,2004,0117:30:00,27 ,       0,141.5261, 10.1843,28.39351
sgpcmbeC1.c1,2004,0118:30:00,27 ,       0,209.6606,14.41898,42.22906
sgpcmbeC1.c1,2004,0119:30:00,27 ,       0,381.2725,22.32052,73.84498
sgpcmbeC1.c1,2004,0120:30:00,27 ,       0,108.3576,12.33745,26.69947
sgpcmbeC1.c1,2004,0121:30:00,27 ,       0,66.44821, 9.43509,17.36243
sgpcmbeC1.c1,2004,0122:30:00,27 ,       0,165.5957,15.53947,37.78066
sgpcmbeC1.c1,2004,0123:30:00,27 ,       0,288.7173,20.24078,57.47851