This file lists the file-sizes of BIFF files, and is used to determine if a BIFF will fit within the allocated cache size. The file is likely unused in BG(2)EE (the values in the file are hold-overs from BG1).
The first column is unused.
The second column holds the names of the BIFF files.
The third column lists the minimum size required in the cache to hold a copy of the BIFF file.
In BG2EE we have:

2DA V1.0
600000000
    FILE_NAME   MINIMUM_SIZE
0   AREA000A      5594396
0   AREA000B      6784788
0   AREA000C      7893348
0   AREA000D     21249730
0   AREA000E     19077948
0   AREA000F     10937536
0   AREA000G     25050944
0   AREA000H      2387392
0   AREA0100     35034812
0   AREA010A      7955920
0   AREA010B      3536470
0   AREA0200     36209514
0   AREA020A      8935896
0   AREA020B      7864526
0   AREA0300     35896972
0   AREA030A      4935994
0   AREA030B      6208118
0   AREA0400     24905192
0   AREA040X       520796
0   AREA0500     23846404
0   AREA050A      6772040
0   AREA050B     10794654
0   AREA050C     20528826
0   AREA050D     41675778
0   AREA0600     36190880
0   AREA060A      7156160
0   AREA0700     37626474
0   AREA070A      1328742
0   AREA0800     37764616
0   AREA080A      6801462
0   AREA080B     14250852
0   AREA0900     24896822
0   AREA090X       624546
0   AREA1000      6261726
0   AREA100A     20337622
0   AREA1100     37927304
0   AREA110A      3154120
0   AREA110B      6367762
0   AREA110C      5013057
0   AREA1200     39031144
0   AREA120A      7636142
0   AREA120B     10679704
0   AREA1300     39176160
0   AREA130X     13836326
0   AREA1400     25000886
0   AREA140A      1706660
0   AREA140B      5845096
0   AREA1500     23167528
0   AREA150A      2422862
0   AREA1600     25065858
0   AREA160X       627368
0   AREA1700     25079510
0   AREA1800     25222732
0   AREA180A      1693982
0   AREA180B      6512352
0   AREA180C     14744828
0   AREA180D      5502164
0   AREA180E      5444328
0   AREA1900     50072764
0   AREA190X      1882850
0   AREA2000     24167528
0   AREA200A      1001956
0   AREA200B      4841884
0   AREA2100     24919496
0   AREA210X      1061202
0   AREA2200     25124050
0   AREA220X       459872
0   AREA2300     25013136
0   AREA230A      7089528
0   AREA230B      1863180
0   AREA2400     24994144
0   AREA2600     25118566
0   AREA260A      4467416
0   AREA260B     26864498
0   AREA260C     27103006
0   AREA260D     27111208
0   AREA2700     24998244
0   AREA2800     24957338
0   AREA2900     25102236
0   AREA3000     24954054
0   AREA3100     24900686
0   AREA3200     25092828
0   AREA320X      1314144
0   AREA3300     25429812
0   AREA330A      4380440
0   AREA330B      4963984
0   AREA330C      4241058
0   AREA330D      5041478
0   AREA3400     24869814
0   AREA340X      1870106
0   AREA3500     24938608
0   AREA3600     25013646
0   AREA360X      1909202
0   AREA3700     24968100
0   AREA3800     25225864
0   AREA380X       365594
0   AREA3900     24890212
0   AREA390X      4996448
0   AREA4000     25113892
0   AREA400X      2042628
0   AREA4100     25011890
0   AREA410X      1314146
0   AREA4200     24994558
0   AREA420X       520700
0   AREA4300     25024818
0   AREA4400     24912344
0   AREA440X       417356
0   AREA4500     24894306
0   AREA450X      1600334
0   AREA4600     24951152
0   AREA4700     25012934
0   AREA470X       417362
0   AREA4800     25209646
0   AREA480X      7001810
0   AREA4900     25123692
0   AREA490X      2695638
0   AREA5000     24889360
0   AREA500X       999202
0   AREA5100     24889878
0   AREA510X      1933228
0   AREA5200     25362870
0   AREA520X      5581062
0   AREA5300     25032742
0   AREA5400     24951646
0   AREA540A      8464406 
0   AREA540B     15513268
0   AREA540C     15114068
0   AREA540D     10468410
0   AREA5500     24942334
0   AREA550X      5292456
0   RNDENCNT      9416156