score<sub>origin</sub>(country) = 100 - (max(impact<sub>origin</sub>(maritime), impact<sub>origin</sub>(road)) - (impact<sub>half</sub>(France, road) - impact<sub>half</sub>(country, road)) / max<sub>all origin</sub>(impact(maritime))*100 | score<sub>origin</sub>(country) = 100 - (max(impact<sub>origin</sub>(maritime), impact<sub>origin</sub>(road)) - (impact<sub>half</sub>(France, road) - impact<sub>half</sub>(country, road)) / max<sub>all origin</sub>(impact(maritime))*100 |