avg_row_len for an index

Is there a reliable way of finding a avg_row_len for an index

For tables dba_tables.avg_row_len gives the average row length of a table

For index , I did a "alter index ... validate structure"  and calculated (LF_ROWS_LEN+BR_ROWS_LEN)/(BR_ROWS+LF_ROWS). Does not seems to be correct. DBA_INDEXES does not have a average row length

Greens8301Asked:
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Greens8301Author Commented:
Very useful script , Thanks
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