Sn 459
Sb 458 S

corresponding for the most part to fractional parts of the unit of measurement adopted in the Tables.

Ba 6215 Te 657 Bi 8373 Co 937

These are:

The character of the lines is indicated as follows:

A line sharply defined at the edges, and narrow when the slit is narrow, s

A band of light, defined as a line, but remaining, even with a narrow slit, nebulous at the edges, n.
A haze of light irresolvable into lines, h.

Double band, too close for measurement, d.

The comparative intensity of the lines is indicated by the smaller figures placed in the position of exponents against the numbers in the Tables. The scale extends from 1 to 10, and includes fractional parts of unity to represent the very faint lines.