The crystalline front was uneven rather than perfectly flat, indicating a mix of crystalline and glassy PS 4 3units within the interface region. Crystallization rates, k, were calculated by performing linear regression on data between 10% and 80% C(t), as indicated by the red markers and black lines in Fig. . Table summarizes the calculated k values for all models, along with the saturated C(t) values, C sat . Both k and C sat depended on the model's crystalline plane. precipitation in 75Li 2 S-25P 2 S 5 glass revealed intense peaks for the (210), ( ), (222), and