Theil-Sen (%/year) trend for a) hourly ozone levels in each bin, and b) 6 human health and 8 vegetation ozone metrics for a site at Glazebury, UK between 1989 and 2013, and c) hourly ozone levels in each bin, and d) 6 human health and 8 vegetation ozone metrics for a site at Yuen Long, Hong Kong, China between 1995 and 2015 (significance determined by the Mann-Kendall test at p < 0.05). (Data characterized as per Lefohn et al., 2017). DOI: https://doi.org/10.1525/elementa.279.f6