Figure 5.18 | The number of days per year where physical work capacity (PWC) is less than 60% based on average daily air temperature and relative humidity (Foster et al., 2021). PWC is defined as the maximum physical work output that can be reasonably expected from an individual performing moderate-to-heavy work in a ‘cool’ reference environment of 15°C. Values plotted are from the early (A) and end of century (B) for SSP5-8.5 using ensemble means from the ISI-MIP CMIP6 data set. See SM5.4 for details.