Fig. 3.

The relationship between the number of cases per day (K) and the total number of cases (N). The markers show the data, the solid line is the regression according to Eq. (8), and the dashed lines give non-simultaneous 95% prediction bounds for response values: a – Austria: $N_{\infty }=14700$, r = 0.195, R² = 0.81; b – Switzerland: $N_{\infty }=28400$, r = 0.163, R² = 0.81; c – The Netherlands: N_∞ = 42,580, r = 0.114, R² = 0.89; d – Italy: N_∞ = 216,600, r = 0.099, R² = 0.82; e – Turkey: N_∞ = 133,700, r = 0.144, R² = 0.94; f – South Korea: $N_{\infty }=10300$, r = 0.158, R² = 0.55.