Thermocouples were inserted directly into the vials. For such positioning, it is not possible to infer a nucleation temperature distribution from the temperature readouts. When thermocouples are positioned within vials, the nucleation kinetics may potentially be affected due to the introduction of additional nucleation sites, thus rendering the observed nucleation behavior non-representative. Also, the number of thermocouples (5-12) would be too small to determine a statistically relevant distribution.