Read the result
Under IS 456 Cl 16 Limits, Individual ≥ (MPa) reads 22.0, Group mean ≥ (MPa) reads 28.5 and the banner says All results conform. Under IS 456 Table 11, each pour’s three-cube mean must reach fck − 3, and each four consecutive results must average at least fck + 0.825σ or fck + 3, whichever is higher (σ = 4 MPa from Table 8 until there are 30 results).