"The 2019 value of 1.1329 x 10-17 cm² and standard uncertainty 0.0035 x 10-17 cm² will be adopted for the ozone absorption cross-section per molecule at 253.65 nm (air) for use in ozone measurement standards maintained at the BIPM and for the calculation of the reference value for the BIPM.QM-K1 on-going comparison of surface ozone measurement standards"(xsd:string)