This file defines minimum and maximum statistics per race.
The first row (titles of columns ) is filled by the names of defined characteristics of PC (like MIN_STR = minimum strength).
The first column is filled by race names.
The crossings of the certain identifiers indicate what are intervals for statistics of PC with chosen race - used for character creation.
In BG1 TotS we have:

2DA V1.0
0
           MIN_STR    MAX_STR    MIN_DEX    MAX_DEX    MIN_CON    MAX_CON    MIN_INT    MAX_INT    MIN_WIS    MAX_WIS    MIN_CHR    MAX_CHR
HUMAN      3          18         3          18         3          18         3          18         3          18         3          18
DWARF      8          18         3          17         11         18         3          18         3          18         3          17
ELF        3          18         6          18         7          18         8          18         3          18         8          18
GNOME      6          18         3          18         8          18         6          18         3          18         3          18
HALF_ELF   3          18         6          18         6          18         4          18         3          18         3          18
HALFLING   7          18         7          18         10         18         6          18         3          17         3          18