Pasteurisation of milk can be carried out either at \(91\,^{\circ}\text{C}\) for 3 s or at \(73\,^{\circ}\text{C}\) for 30 s to inactivate vegetative cells of microorganism(s). The sterilisation value is 10 in both the cases. Thermal death time constant (z value) for reference temperatures of \(73\,^{\circ}\text{C}\) and \(91\,^{\circ}\text{C}\), in \(^{\circ}\text{C}\), is nearest to