Kiel diagram comparing observed stellar parameters with best-fit theoretical models. The blue circles represent the 243 observed main-sequence stars (0.99 M_⊙ < M < 1.005 M_⊙), while the age-colored triangles show their corresponding best-fit 1 M_⊙ theoretical models from our chi-square matching procedure. The color scale indicates the normalized stellar age. The clear progression from younger (pink) to older (yellow) models along the evolutionary track demonstrates that our matching algorithm successfully recovers physically meaningful age sequences.