A Table of Chapman's Grazing Incidence Integral Ch(x, χ)

The paper contains a table of Chapman's function Ch(x,?)=x sin ? ?0? exp (x-x sin ?/sin ?) cosec2 ?d? to three decimal places for x=50 (50) 500 (100) 1000 and ?=20? (1?) 100? excluding values of Ch(x, ?) greater than 100.