$
$ cat -n f26
     1  E_TIM   16,
     2  ETE     15,
     3  EOND    26,
     4  EEC     81,
     5  E       un,
     6  E       un,
     7  E       249,
     8  E       19,
     9  E_TIM   17,
    10  ETE     15,
    11  EOND    29,
    12  EEC     82,
    13  E       un,
    14  E       un,
    15  E       249,
    16  E       19,

$
$ perl -ne 'BEGIN { $fmt = "%-8s %-8s %-8s %-8s %-8s %-8s %-8s %-8s\n" }
            if ($. % 8 == 1 and $. > 1) {
                if (! $first) {
                    printf($fmt, map { $_->[0] } @x);
                    $first = 1;
                }
                printf($fmt, map { $_->[1] } @x);
                @x = ();
            }
            /^(\S+)\s+(\S+)$/ and push @x, [ $1, $2 ];
            END {
                printf($fmt, map { $_->[1] } @x);
            }
           ' f26
E_TIM    ETE      EOND     EEC      E        E        E        E
16,      15,      26,      81,      un,      un,      249,     19,
17,      15,      29,      82,      un,      un,      249,     19,
$
$