Strongly lensed L₁ (left panel) and L₂ (right panel) detection rates per effective year of observation for u, g, r and i bands assuming a variable peak magnitude, m_lim, peak. The m_lim, peak ranges for ZTF and LSST1 assuming a survey area of 20 000 deg² are shown in gray and pink, respectively. The LSST1 m_lim, peak values for each of the four bands are overlaid along the curves in stars, and the ZTF m_lim, peak values for g, r and i are overlaid along the curves in diamonds.