If the cipher is as heavily homophonic as the one oshfdk suggests, the statistics are flattened and useless.
Frequencies of removed and added EVA character (max. 1, _ = 0) in paragraphs of RF1b:
0.1929 __
0.0389 d_
0.0379 _d
0.0365 e_
0.0316 _e
0.0278 q_
0.0260 rl
0.0214 _q
0.0212 kt
0.0206 sc
0.0200 lr
0.0198 tk
0.0173 oa
0.0173 i_
0.0171 _l
0.0163 cs
0.0161 _o
0.0157 o_
0.0151 l_
0.0121 y_
0.0121 t_
0.0113 _i
0.0111 ed
0.0111 _t
0.0107 s_
0.0105 _k
0.0103 _y
0.0099 ao
0.0087 oy
0.0083 rm
0.0083 k_
0.0071 kd
0.0071 dk
0.0065 ql
0.0062 de
0.0054 yo
0.0050 dt
0.0046 eq
0.0044 eo
0.0042 r_
0.0042 ol
0.0042 lm
0.0042 _r
0.0038 qe
0.0038 oe
0.0038 el
0.0036 sy
0.0036 ld
...
Frequencies of removed and added EVA character (max. 1, _ = 0) in paragraphs of RF1b:
0.1929 __
0.0389 d_
0.0379 _d
0.0365 e_
0.0316 _e
0.0278 q_
0.0260 rl
0.0214 _q
0.0212 kt
0.0206 sc
0.0200 lr
0.0198 tk
0.0173 oa
0.0173 i_
0.0171 _l
0.0163 cs
0.0161 _o
0.0157 o_
0.0151 l_
0.0121 y_
0.0121 t_
0.0113 _i
0.0111 ed
0.0111 _t
0.0107 s_
0.0105 _k
0.0103 _y
0.0099 ao
0.0087 oy
0.0083 rm
0.0083 k_
0.0071 kd
0.0071 dk
0.0065 ql
0.0062 de
0.0054 yo
0.0050 dt
0.0046 eq
0.0044 eo
0.0042 r_
0.0042 ol
0.0042 lm
0.0042 _r
0.0038 qe
0.0038 oe
0.0038 el
0.0036 sy
0.0036 ld
...