IDL read: readcol,'luminosity_disk_kpc_starmass_8.5_9.0.txt',Radius,Stellar_density,Stellar_density_plus_sigma,Stellar_density_minus_sigma,Surface_brightness,Surface_brightness_plus_sigma,Surface_brightness_minus_sigma,Sample_coverage,format='F,F,F,F,F,F,F,F',delim=' '
Column1:Radius(kpc)  Column2:Stellar_density(Msun/pc2)  Column3:Stellar_density+Sigma(Msun/pc2)  Column4:Stellar_density-Sigma(Msun/pc2)  Column5:Surface_brightness(mag/arcsec2)  Column6:Surface_brightness+Sigma(mag/arcsec2)  Column7:Surface_brightness-Sigma(mag/arcsec2)  Column8:N_sample(#)
  0.12    73.17    183.72     29.14  22.24  23.24  21.24  119.00
  0.25    61.70    143.96     26.45  22.42  23.34  21.50  119.00
  0.38    54.57    117.93     25.26  22.56  23.39  21.72  119.00
  0.50    48.80     97.74     24.37  22.68  23.43  21.92  119.00
  0.62    43.71     81.64     23.40  22.80  23.48  22.12  119.00
  0.75    39.23     69.10     22.27  22.92  23.53  22.30  119.00
  0.88    34.86     58.60     20.74  23.04  23.61  22.48  119.00
  1.00    31.05     50.44     19.11  23.17  23.70  22.64  119.00
  1.12    27.81     43.63     17.73  23.29  23.78  22.80  119.00
  1.25    25.00     37.92     16.48  23.41  23.86  22.95  119.00
  1.38    22.42     33.07     15.19  23.52  23.95  23.10  119.00
  1.50    20.12     28.99     13.96  23.64  24.04  23.24  119.00
  1.62    18.09     25.73     12.72  23.76  24.14  23.37  119.00
  1.75    16.28     23.18     11.44  23.87  24.25  23.49  119.00
  1.88    14.73     21.07     10.30  23.98  24.37  23.59  119.00
  2.00    13.48     19.28      9.42  24.08  24.46  23.69  119.00
  2.12    12.26     17.68      8.51  24.18  24.58  23.78  119.00
  2.25    11.09     16.34      7.52  24.29  24.71  23.87  119.00
  2.38    10.02     15.07      6.65  24.40  24.84  23.95  119.00
  2.50     9.22     13.94      6.09  24.49  24.94  24.04  118.00
  2.62     8.44     12.98      5.49  24.58  25.05  24.12  118.00
  2.75     7.74     12.31      4.87  24.68  25.18  24.17  118.00
  2.88     7.18     11.58      4.45  24.76  25.28  24.24  118.00
  3.00     6.71     10.86      4.14  24.83  25.36  24.31  116.00
  3.12     6.23     10.30      3.76  24.91  25.46  24.37  114.00
  3.25     5.87      9.59      3.59  24.98  25.51  24.45  113.00
  3.37     5.45      8.90      3.34  25.06  25.59  24.53  112.00
  3.50     5.16      8.28      3.22  25.12  25.63  24.60  109.00
  3.62     4.83      7.83      2.98  25.19  25.72  24.67  107.00
  3.75     4.63      7.42      2.89  25.24  25.75  24.72  104.00
  3.88     4.29      7.01      2.62  25.32  25.85  24.79  103.00
  4.00     4.10      6.66      2.52  25.37  25.89  24.84   99.00
  4.12     3.77      6.23      2.28  25.46  26.00  24.91   98.00
  4.25     3.54      6.04      2.08  25.53  26.11  24.95   94.00
  4.38     3.35      5.65      1.99  25.59  26.16  25.02   92.00