Left: Relationship between [F/Fe] and [Fe/H], age, and R_gc. Right: Same but for [F/H]. Field stars from Nandakumar et al. (2023b) are depicted as light blue squares. A representative error bar for the data from Nandakumar et al. (2023b) is shown in the bottom-right corner in the first row of panels. The black hexagons are the OCs studied in our previous paper, Seshashayana et al. (2024). We also plot values for five OCs as light gray stars, namely Hyades, NGC 752, and M 67 from Nault & Pilachowski (2013), another estimate of M 67 and another cluster, NGC 6404, from Maiorca et al. (2014), and NGC 2345 from Holanda et al. (2024). The slopes were obtained via a fit to all strictly similarly analyzed OCs from this and our previous work, excluding the outlier NGC 6791 (see Seshashayana et al. 2024, for a discussion).