Help me please Determination of difference (in cm-1) between delta-oct [Co(NH3)5Cl]3+ and [Co(NH3)6] 3+ [include sign (+/-) of difference] with using the table down below

Table 20.2 Values of Aoct for some d-block metal complexes. A/cm-1 Complex A/cm-1 / 17 000 20 300 17850 12 400 Complex (TiF6]3- [Ti(OH2).]3+ [V(OH2)6]3+ [V(OH2)6]2+ (CrF6]3- (Cr(OH2).]3+ (Cr(OH2)612 (Cr(NH3).]3+ (Cr(CN)6]3- (MnF6]2- [Fe(OH).]+ [Fe(OH)]2+ 14100 35000 33 800 13 100 22 900 10 200 24 000 2+ [Fe(ox);]3- [Fe(CN)6]3- [Fe(CN)6]4- (CoF6]3- (Co(NH3).]3+ Co(NH3)6]2+ (Co(en)3]3+ (Co(OH2).]3+ [CO(OH2).]2+ [Ni(OH2)6]2+ [Ni(NH3).]2+ [Ni(en)3]2+ 15 000 17 400 14 100 21 600 26 600 21 800 18 200 9 300 8 500 13+ 13 700 9 400 10 800 11 500