diff --git a/cara/montecarlo.py b/cara/montecarlo.py
index 7aeb5a95..897c9271 100644
--- a/cara/montecarlo.py
+++ b/cara/montecarlo.py
@@ -4,12 +4,12 @@ from typing import Optional
 
 
 # The (k, lambda) parameters for the weibull-distributions corresponding to each quantity
-weibull_parameters = [((0.5951563631241763, 0.027071715346754264),  # emission_concentration
-                       (15.312035476444153, 0.8433059432279654)),   # particle_diameter_breathing
-                      ((2.0432559401256634, 3.3746316960164147),    # emission_rate_speaking
-                       (5.9493671011143965, 1.081521101924364)),    # particle_diameter_speaking
-                      ((2.317686940362959, 5.515253884170728),      # emission_rate_speaking_loudly
-                       (7.348365409721486, 1.1158159287760463))]    # particle_diameter_speaking_loudly
+weibull_parameters = [((0.5951563631241763, 0.027071715346754264),          # emission_concentration
+                       (15.312035476444153, 0.8433059432279654 * 3.33)),    # particle_diameter_breathing
+                      ((2.0432559401256634, 3.3746316960164147),            # emission_rate_speaking
+                       (5.9493671011143965, 1.081521101924364 * 3.33)),     # particle_diameter_speaking
+                      ((2.317686940362959, 5.515253884170728),              # emission_rate_speaking_loudly
+                       (7.348365409721486, 1.1158159287760463 * 3.33))]     # particle_diameter_speaking_loudly
 
 
 def calculate_qr(viral_load: float, emission: float, diameter: float, mask_efficiency: float,