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Heat Discomfort Zone

Maximum recommended work load and heat discomfort zone

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Maximum recommended work load
Temperature		Relative Humidity (%)
^oF	^oC	30	40	60	80
80	27	Very Heavy	Very Heavy	Very Heavy	Heavy
90	32	Very Heavy	Heavy	Moderate	Light
100	38	Heavy	Moderate	Light	Not recommended
110	43	Moderate	Light	Not recommended	Not recommended
120	49	Light	Not recommended	Not recommended	Not recommended

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