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What effect did the November 2011 ASHRAE table 9.4.6 Addendum I, have on exterior lighting power allowances?

Significant reductions for tradable surfaces in LZ1 and LZ2 and some in LZ3. See the new table for details.

Question: 

What effect did the November 2011 ASHRAE table 9.4.6 Addendum I, have on exterior lighting power allowances?

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