TABLE I. List of Some Former Studies That Reported the Average Diameter of covid-19 in Nanometer (nm).

Ref.	Diameter	Average diameter	Spikes length	Notes:
	(nm)		(nm)
[1]	60-140	100	9-12	Based on SAR-Cov-2
[2]	120-160	140	20	Used diam = 140 nm Spike length = 20nm in the simulation
[5]	50-200	125
[15]	30-100	65
[18]	80-120	100
[20]	100-150	125	NA
[21]	60-140	100	9-12	From Transmission Electron Microscopy
[22]	80-120	100
[23]	60-140	100
[25]	60-140	100	9-12	Referred to [21]