This file defines luck modifier if a character is fatigued (penalty to attack/damage rolls).
First column is the value of fatigue affecting NPC.
The second one as it is written, the value of luck modifier for given fatigue values.
In BG2EE we have:

2DA V1.0
 -94
     LUCK
0    0
1    0
2    0
3    0
4    0
5    0
6    0
7    -1
8    -2
9    -3
10   -4
11   -5
12   -6
13   -7
14   -8
15   -9
16   -10
17   -11
18   -12
19   -13
20   -14
21   -15
22   -16
23   -17
24   -18
25   -19
26   -20
27   -21
28   -22
29   -23
30   -24
31   -25
32   -26
33   -27
34   -28
35   -29
36   -30
37   -31
38   -32
39   -33
40   -34
41   -35
42   -36
43   -37
44   -38
45   -39
46   -40
47   -41
48   -42
49   -43
50   -44
51   -45
52   -46
53   -47
54   -48
55   -49
56   -50
57   -51
58   -52
59   -53
60   -54
61   -55
62   -56
63   -57
64   -58
65   -59
66   -60
67   -61
68   -62
69   -63
70   -64
71   -65
72   -66
73   -67
74   -68
75   -69
76   -70
77   -71
78   -72
79   -73
80   -74
81   -75
82   -76
83   -77
84   -78
85   -79
86   -80
87   -81
88   -82
89   -83
90   -84
91   -85
92   -86
93   -87
94   -88
95   -89
96   -90
97   -91
98   -92
99   -93
100  -94