This data set of two-week integrated 14C-CO2 observations from the global atmospheric monitoring stations Alert (82.45°N, 62.52°W, 185m a.s.l.), Jungfraujoch (46.55°N, 7.98°E, 3450m a.s.l.) and Neumayer (70.65°S, 8.25°E, 17m a.s.l.) are displayed in the Figures of Levin et al. (Radiocarbon in global tropospheric carbon dioxide https://doi.org/10.1017/RDC.2021.102, 2021). Earlier results had been published by Levin et al. (2010: DOI: 10.1111/j.1600-0889.2009.00446.x.) and Hammer and Levin (2017: doi:10.11588/data/10100). The current data sets replace the earlier releases; they have been carefully re-evaluated and quality controlled, and thus provide the most accurate 14C-CO2 data set available for these stations. Please cite these data together with the accompanying paper by Levin et al. (Radiocarbon in global tropospheric carbon dioxide, https://doi.org/10.1017/RDC.2021.102, 2021).