A bug in ISIMIP3BASD v2.3 caused bad bias adjustment results for the diurnal temperature range (and hence tasmax and tasmin) in some grid cells and calendar months. The bug was fixed in ISIMIP3BASD v2.3.1, which was used to re-do the harmonization of GSWP3 tasmax and tasmin data to the corresponding EWEMBI data. The whole period 1901-1978 was affected, see the plot below. See here for which grid cells were affected. The old data were replaced by the new data on May 29, 2020.