datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,01 0:30:00,31 ,  0.1639,2.787784,1.146703,0.595067
sgpcmbeC1.c1,1999,01 1:30:00,31 ,0.202223,2.562332,1.122609,0.565551
sgpcmbeC1.c1,1999,01 2:30:00,31 ,0.255796,2.655197,1.146681,0.571435
sgpcmbeC1.c1,1999,01 3:30:00,30 ,0.238384,3.404344,1.127521,0.623322
sgpcmbeC1.c1,1999,01 4:30:00,30 ,0.221099, 2.51626,1.105539,0.545931
sgpcmbeC1.c1,1999,01 5:30:00,30 ,0.213802,2.422629,1.116356,0.557955
sgpcmbeC1.c1,1999,01 6:30:00,30 ,0.219504,3.539035,1.162036,0.691671
sgpcmbeC1.c1,1999,01 7:30:00,31 ,0.211647,4.153418,1.230242, 0.81473
sgpcmbeC1.c1,1999,01 8:30:00,30 ,0.206615,3.640754,  1.1739,0.751997
sgpcmbeC1.c1,1999,01 9:30:00,29 ,0.193253,2.890271,1.076511,0.576609
sgpcmbeC1.c1,1999,0110:30:00,30 ,0.177462,2.837262,1.133368,  0.6234
sgpcmbeC1.c1,1999,0111:30:00,30 , 0.16659,3.187161,1.160204, 0.67641
sgpcmbeC1.c1,1999,0112:30:00,29 ,0.161611,2.708606, 1.08783,0.540203
sgpcmbeC1.c1,1999,0113:30:00,28 ,0.158515,2.753667,1.110777,0.511849
sgpcmbeC1.c1,1999,0114:30:00,27 ,0.164385,  3.1769,1.138013,0.573893
sgpcmbeC1.c1,1999,0115:30:00,27 ,0.174195,3.385916, 1.15061,0.612932
sgpcmbeC1.c1,1999,0116:30:00,29 ,0.159074,3.325834,1.148343,0.624378
sgpcmbeC1.c1,1999,0117:30:00,30 ,0.159752,3.896841,1.161001,0.677288
sgpcmbeC1.c1,1999,0118:30:00,30 ,0.171461,3.875871,1.151382,0.666361
sgpcmbeC1.c1,1999,0119:30:00,30 ,0.183012,4.011544,1.144617, 0.67826
sgpcmbeC1.c1,1999,0120:30:00,30 , 0.17563,3.475873,1.126218,0.610402
sgpcmbeC1.c1,1999,0121:30:00,31 ,0.169756,3.512854,1.145222,0.635683
sgpcmbeC1.c1,1999,0122:30:00,31 ,  0.1684,3.357059,1.147879, 0.63789
sgpcmbeC1.c1,1999,0123:30:00,31 ,0.156159,2.884683,1.141267,0.610301