▁were ▁based ▁on ▁ 8 4 . 9 ▁million ▁households . ▁ ▁Season ▁ 4 ▁According ▁to ▁the ▁Daily ▁B ree ze , ▁a ▁newspaper ▁from ▁Tor rance , ▁California , ▁the ▁ 1 9 8 5 – 8 6 ▁ratings ▁are ▁based ▁on ▁ 8 5 . 9 ▁million ▁households ▁with ▁at ▁least ▁one ▁television . ▁ ▁Season ▁ 5 ▁According ▁to ▁the ▁ 1 5 ▁May ▁ 1 9 8 7 ▁article ▁from ▁The ▁Arg us - Press , ▁the ▁ 1 9 8 6 - 8 7 ▁ratings ▁were ▁based ▁on ▁ 8 7 . 4 ▁million ▁households ▁with ▁at ▁least ▁one ▁television ▁set . ▁Unless ▁otherwise , ▁the ▁sources ▁were ▁of ▁the ▁newspaper ▁Pitts burgh ▁Post - G az ette . ▁ ▁Season ▁ 6 ▁Unless ▁otherwise , ▁the ▁main ▁source ▁of ▁N iel sen ▁ratings ▁is ▁the ▁newspaper ▁Pitts burgh ▁Post - G az ette . ▁According ▁to ▁that ▁main ▁source , ▁ratings ▁of ▁ 1 9 8 7 - 8 8 ▁were ▁based ▁on ▁ 8 8 . 6 ▁million ▁households ▁that ▁have ▁at ▁least ▁one ▁television . ▁ ▁Season ▁ 7 ▁Unless ▁otherwise , ▁the ▁main ▁source ▁of ▁N iel sen ▁ratings ▁is ▁the ▁newspaper ▁Pitts burgh ▁Post - G az ette . ▁According ▁to ▁that ▁main ▁source , ▁ratings ▁of ▁ 1 9 8 8 - 8 9 ▁were ▁based ▁on ▁ 9 0 . 4 ▁million ▁households ▁that ▁have ▁at ▁least ▁one ▁television . ▁ ▁Season ▁ 8 ▁According ▁to ▁many ▁newsp apers ,