season tier division place
season
tier
division
place
minimum_number minimum_parsed minimum_year maximum_number maximum_parsed maximum_year
number
number
timespan number text rank
1963-86 5 regional 2nd
how many years did they place 15th or lower ?
WRB JJ NNS VBD-AUX PRP VBP JJ CC JJR .
7
select count ( c1 ) from w where c4_number >= 15