Datasets used for the manuscript: Long-term wastewater monitoring of SARS-CoV-2 viral loads and variants at the major international passenger hub Amsterdam Schiphol Airport: a valuable addition to COVID-19 surveillance pandemic_daily_passenger_counts.tsv: An overview of daily passenger arrival counts at Amsterdam Schiphol Airport per continent of origin during the study period 16-02-2020 - 04-09-2022 pre-pandemic_daily_passenger_averages.tsv: An overview of mean daily passenger arrival counts...