highly significantp < 0.001
The value for 2013 is below the lowest marginal warmth sum in 1973–2012 (ranging from 185.5 to 436 °C; mean 315.1 °C ± 64.3 SD), resulting in a highly significant difference ( t = 3.46, df = 39, p < 0.001).
The value for 2013 is below the lowest marginal warmth sum in 1973–2012 (ranging from 185.5 to 436 °C; mean 315.1 °C ± 64.3 SD), resulting in a highly significant difference ( t = 3.46, df = 39, p < 0.001).