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. 2022 Nov 23;17(11):e0263803. doi: 10.1371/journal.pone.0263803

Table 1. Classification of included annual indices.

Comparison Averaging Period Index Type Annual Indices
Absolute Full Year Temperature Mean of daily mean; mean of daily maximum; hours > 90°F (32.2°C); hours > 100°F (37.8°C)
Heat Index Mean of daily mean; mean of daily maximum; hours > 90°F (32.2°C); hours > 105°F (40.6°C)
WBGT Mean of daily mean; mean of daily maximum; hours > 85°F (29.4°C); hours > 90°F (32.2°C)
Heat Season Temperature Mean of daily mean; mean of daily maximum
Heat Index Mean of daily mean; mean of daily maximum
WBGT Mean of daily mean; mean of daily maximum
Relative (1990–2019 baseline) Full Year Temperature Mean of daily mean anomaly; days > 1 standard deviation of baseline
Heat Index Mean of daily mean anomaly; days > 1 standard deviation of baseline
WBGT Mean of daily mean anomaly; days > 1 standard deviation of baseline
Heat Season Temperature Mean of daily mean anomaly; days > 1 standard deviation of baseline
Heat Index Mean of daily mean anomaly; days > 1 standard deviation of baseline
WBGT Mean of daily mean anomaly; days > 1 standard deviation of baseline