Total solids concentration is most often 20 mg/mL even though there are reports of concentrations between 6 mg/mL and 37.5 mg/mL (Figure and Table ). Additionally, data points are concentrated around round numbers such as 10, 15, 20 and 25 mg/mL. Unfortunately, 115 entries did not have any information about total solids concentration (or individual solution concentration from which we could calculate TSC). This hole in the dataset is particularly egregious since it is one of the easiest numbers to report. The fact that 21% of the entries do not have this data suggests that we as a community of editors and reviewers are not paying close enough attention to the reproducibility of published data. The same can be applied to another parameter that can be recorded with ease: spin coating speed. The two most common values are 2000 rpm and 3000 rpm. However, only 48% of entries (266) reported spin coating speeds even though the entries in this dataset are restricted to those devices fabricated by spin coating. The same biases are also evident in the distributions of annealing temperature and time, although these data are reported more regularly. Finally, although the distribution of active layer thickness values is quite smooth and uniform, the values are centered at 100 nm, with the mode being exactly 100 nm. This is statistically unlikely, and is characteristic of either rounding from human bias, inaccurate measurements, or both.