heading \bf Blood Pressure With Increasing Age
xlabel  time (years)
ylabel  \stack{b,l,o,o,d, , ,p,r,e,s,s,u,r,e}
type    line
x       25  30  35  40  45  50  60     70     80     90
y       120 135 156 165 175 190 203"*" 196"*" 210"*" 203"*"
dy      12  13  15  16  17  19  20  20  21  18
type    xy
x       25  30  35  40  45  50  60  70  80  90
y       120 135 156 165 175 190 203 196 210 203