级距

Traditional form:

級距

Pinyin (reading):

jíjù

Definitions:

• range of values
• category defined by a range of values (tier, bracket, stratum etc)

Characters:

• 级 - level, rank; class, grade
• 距 - distance, gap

Traditional characters:

• 級 - level, rank; class, grade
• 距 - distance, gap