datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,01 0:30:00,21 ,       0,2.742521,1.346237,0.935268
sgpcmbeC1.c1,2007,01 1:30:00,20 ,       0,3.057937,1.513376,1.049978
sgpcmbeC1.c1,2007,01 2:30:00,17 ,       0,2.976069, 1.41016, 1.08939
sgpcmbeC1.c1,2007,01 3:30:00,18 ,       0,3.230078,1.373518,1.214151
sgpcmbeC1.c1,2007,01 4:30:00,16 ,       0,3.357269,1.663668,1.178481
sgpcmbeC1.c1,2007,01 5:30:00,17 ,       0,3.353795,1.557576,1.138086
sgpcmbeC1.c1,2007,01 6:30:00,23 ,       0,3.450978,1.037399,1.075322
sgpcmbeC1.c1,2007,01 7:30:00,31 ,0.021435,10.16446,4.001065,2.947785
sgpcmbeC1.c1,2007,01 8:30:00,31 ,4.911984,143.6748,  78.661,43.23235
sgpcmbeC1.c1,2007,01 9:30:00,31 ,12.52325, 325.466,207.6525,103.4618
sgpcmbeC1.c1,2007,0110:30:00,31 ,28.88273,496.8935,323.5215,156.7031
sgpcmbeC1.c1,2007,0111:30:00,31 ,50.48832,606.8404,408.0461,185.8024
sgpcmbeC1.c1,2007,0112:30:00,31 ,64.30567,657.8734, 446.354,206.8198
sgpcmbeC1.c1,2007,0113:30:00,31 ,69.21481,628.0576,436.0029,185.7155
sgpcmbeC1.c1,2007,0114:30:00,31 ,90.30521,530.0584,374.2614, 150.607
sgpcmbeC1.c1,2007,0115:30:00,31 ,46.01115,393.8686,254.3251,115.9816
sgpcmbeC1.c1,2007,0116:30:00,31 ,13.77432,216.4023,118.8308,61.05253
sgpcmbeC1.c1,2007,0117:30:00,31 ,0.285417,50.47546,18.44393,  13.698
sgpcmbeC1.c1,2007,0118:30:00,28 ,       0,3.327544,0.984605,1.073085
sgpcmbeC1.c1,2007,0119:30:00,26 ,       0,3.412271,1.176039,1.038946
sgpcmbeC1.c1,2007,0120:30:00,20 ,       0,2.697652,1.369012,0.940887
sgpcmbeC1.c1,2007,0121:30:00,22 ,       0,2.511872,1.006994,0.911857
sgpcmbeC1.c1,2007,0122:30:00,19 ,       0,2.967117,1.240846,0.982869
sgpcmbeC1.c1,2007,0123:30:00,20 ,       0,2.845157,1.212167,1.009827