Try this (append to your existing search)
..your base search giving host,count | streamstats count as sno by host | eval count=if(sno>1,"",count) | fields - sno
we need an empty value
Using evaluation we can able to make an empty cell
eval count = if(count<= 104307," ", count)
but how should be dynamically checking for every repeated host except top host value, that we need to be analyzing
actual Resulat
host count
aaa 111
aaa 100
aaa 090
bbb 102
bbb 100
bbb 102
bbb 099
ccc 120
ccc 110
Expected results
host count
aaa 111
aaa
aaa
bbb 102
bbb
bbb
bbb
ccc 120
ccc
Empty as in truely null, or would a space work?