Table 1.

Primary and unknown data sets. Sample size for different cities and unknown, along with clean files (size is in GB)

Location	Acronym	Number of samples	Total size (GB) of clean files (FASTQ format)	Total number of reads (filtered)
Auckland, New Zealand	AKL	15	47.8	136,022,160
Hamilton, Canada	HAM	16	61.5	179,554,428
Sacramento, US	SAC	16	36.5	105,326,430
Santiago, Chile	SCL	20	215.3	613,721,390
Offa, Nigeria	OFA	20	438.2	1,267,427,220
Porto, Portugal	PXO	60	132.2	380,372,340
Tokyo, Japan	TOK	20	308.6	1,103,076,136
New York, US	NYC	26	368.8	1,086,713,476
Unknown	UNK	30	75.3	219,935,058