mao=c( 6.8, 8.4, 8.7,11.9,14.2,18.8,
       9.9, 4.1, 9.7,12.7, 5.2, 7.8,
       7.8, 7.4, 7.3,10.6,14.5,10.7)

segments=c(23,30,54,28,31,29,34,35,30,
           27,21,43,51,35,51,49,35,24,
           26,29,21,29,37,27,28,33,33,
           23,37,27,40,48,41,20,30,57)