Related Clues:

• Avg. level
• The norm: Abbr.
• Gas pump spec.
• Pt. of MST
• Part of CST: Abbr.
• Kind of deviation, in stats.
• Rule (Abbr.)
• Love bug?
• Customary: Abbr.
• __ U.S. Pat. Off.
• --- U.S. Pat. Off.
• Trademark type: Abbr.
• Part of EST: Abbr.
• Benchmark, briefly
• Avg., sizewise