A table of maxima and minima of the Bessel functions J_n(Z) for n = 0 to n = 30

Maxima and minima are tabulated for the Bessel functions J_n(x) for values of n from 0 to 30 [i.e. zeros of J^'_n(x)]. The first six points are recorded for each function. The table considerably extends the range of earlier tables available in the literature. It should have applications in the interpretation of diffraction patterns from helical or wave-form structures or features, and has been used in connection with some electron microscope images.