Fig. 4From: Features of the Earth’s seasonal hydroclimate: characterizations and comparisons across the Köppen–Geiger climates and across continentsSide-by-side boxplots of the values of a spectral entropy, b Hurst exponent, c trend strength and d seasonality strength per climate division (Kottek et al. 2006) for seasonal temperature, precipitation and river flow. The limits of the vertical axis of the blue rectangle have been set identical to the upper and lower limits of the blue ribbon, thereby allowing comparisons both across the various temperature time series and across time series types. The corresponding mean values are presented in Fig. 5Back to article page