Table 7.

Supplier’s data

Supplier’s locations (City)	Average variable cost before February 19, 2020 (Rials) (100,000 units)	Average variable and hygiene cost during the COVID-19 pandemic (February 19, 2020–June 26, 2021) (Rials), including: Disinfection and sanitizer costs + PPE costs + COVID-19 test cost + costs of COVID-19 education + Costs of COVID-19 vaccine (100,000 units)	Specific net CO2 emission before February 19, 2020 (kg CO2 per tonne of material)	Specific net CO2 emission during the COVID-19 pandemic (February 19, 2020–June 26, 2021) (kg CO2 per tonne of material)	Average CO2 emissions = average CO2 released $\times$ average distance $\times$ average shipping rates before February 19, 2020 (road/rail/air, tonnes)	Average CO2 emissions = average CO2 released $\times$ Average distance $\times$ Average shipping rates during the COVID-19 pandemic (February 19, 2020–June 26, 2021) (road/rail/air, tonnes)
Isfahan	11,000,000,000	13,000,000,000	486.7	470.2	7800	6905
Yazd	12,700,000,000	14,500,000,000	399.6	384.2	6500	6070
Tehran	18,000,000,000	19,200,000,000	376.0	369.2	8500	7605