how to calculate wbgt indoor?
['For outdoors with direct sun exposure: WBGT = 0.7 x Tempwet bulb + 0.2 x Tempglobe + 0.1 x Tempair', 'For indoors or outdoors without direct sun exposure: WBGT = 0.7 x Tempwet bulb + 0.3 x Tempglobe']