The updated multiband PL relations, where the best-fit PL relations are shown in solid lines (see Table 3), and the dashed lines represent the ±3σ of the best-fit PL relations (hence, data points outside the ±3σ range are rejected in the fitting). The BVIJHK-band PL relations were updated from Bhardwaj (2022) by using the homogeneous distance from Baumgardt & Vasiliev (2021). The updated gri-band PL relations were derived from combining two samples of TIICs: those with ZTF data as listed in Table 1, and the TIICs from the B22 sample that are not included in Table 1 (after being transformed to the gri bands). See Section 4.2 for more details. Note that the error bars are smaller than the size of the symbols.