Each line of the file Carina.dat contains the following information.  Actual values are
shown for star 15025.

Col.    type              value      explanation
----    ----              -----      -----------
1       integer           15025      sequential identification number
2       real              4185.0     x in accompanying image, increases E at 0\Sec5/pixel
3       real              3391.5     y in accompanying image, increases N at 0\Sec5/pixel
4       real              20.209     B-band magnitude
5       real              0.0030     sigma(B), standard error of the mean
6       integer           10         number of valid photometric measurements in B
7       real              18.479     I-band magnitude
5       real              0.0046     sigma(R), standard error of the mean
9       integer           14         number of valid photometric measurements in R
10      real              1.049      mean value of the chi image-quality index
11      real              -0.027     mean value of the sharp image-quality index
12      real              10.73      value of the sep image-isolation index
13      real              0.283      value of the variability index
14      real              12.0       weight of the variability index
15-17   h m s          06 41 22.36   Right ascension, equinox J2000.0, epoch 1995
18-20   deg min sec    -50 49 48.3   Declination, equinox J2000.0, epoch 1995
21      integer            24        number of images used for the astrometry