▁Christian ▁cross ▁to ▁indicate ▁the ▁direction ▁of ▁Jerusalem ▁from ▁Europe . ▁ ▁Use ▁ ▁Pres ented ▁in ▁a ▁circular ▁format , ▁the ▁modern ▁wind ▁rose ▁shows ▁the ▁frequency ▁of ▁wind s ▁blow ing ▁from ▁particular ▁directions ▁over ▁a ▁specified ▁period . ▁ ▁The ▁length ▁of ▁each ▁" sp oke " ▁around ▁the ▁circle ▁is ▁related ▁to ▁the ▁frequency ▁that ▁the ▁wind ▁blow s ▁from ▁a ▁particular ▁direction ▁per ▁unit ▁time . ▁ ▁Each ▁concent ric ▁circle ▁represents ▁a ▁different ▁frequency , ▁em an ating ▁from ▁zero ▁at ▁the ▁center ▁to ▁increasing ▁frequencies ▁at ▁the ▁outer ▁circles . ▁ ▁A ▁wind ▁rose ▁plot ▁may ▁contain ▁additional ▁information , ▁in ▁that ▁each ▁spoke ▁is ▁broken ▁down ▁into ▁color - coded ▁bands ▁that ▁show ▁wind ▁speed ▁ranges . ▁ ▁Wind ▁ros es ▁typically ▁use ▁ 1 6 ▁cardinal ▁directions , ▁such ▁as ▁north ▁( N ), ▁N NE , ▁NE , ▁etc ., ▁although ▁they ▁may ▁be ▁sub div ided ▁into ▁as ▁many ▁as ▁ 3 2 ▁directions . ▁ ▁In ▁terms ▁of ▁angle ▁measurement ▁in ▁degrees , ▁North ▁corresponds ▁to ▁ 0 ° / 3 6 0 ° , ▁East ▁to ▁ 9 0 ° , ▁South ▁to ▁ 1 8 0 ° ▁and ▁West ▁to ▁ 2 7 0 ° . ▁ ▁Comp iling ▁a ▁wind ▁rose ▁is ▁one ▁of ▁the ▁pre lim inary ▁steps ▁taken ▁in ▁construct ing ▁air port ▁run ways , ▁as ▁aircraft ▁can ▁have ▁a ▁lower ▁ground ▁speed ▁at ▁both ▁landing ▁and ▁take off ▁when ▁pointing ▁into ▁the ▁wind .