X(1)=.095012509837637D0
X(2)=.281603550779259D0
X(3)=.458016777657227D0
X(4)=.617876244402644D0
X(5)=.755404408355003D0
X(6)=.865631202387832D0
X(7)=.944575023073233D0
X(8)=.989400934991650D0