The database is made of the set of the CRDS absorption spectra recorded for the R(06), R(12), R(16), R(18) and R(20) transitions of the 30013-00001 band of 12CO2 in air following the procedures and with the experimental setups described in the paper entitled "CRDS measurements of air-broadened lines in the 1.6 µm band of 12CO2: Line shape parameters with their temperature dependence" by D. Mondelain, A. Campargue, H. Fleurbaey, S. Kassi, S. Vasilchenko published in JQSRT 288 (2022) 108267. Each averaged spectrum corresponds to a .csv file including the following columns: absolute wavenumber (in cm-1), cavity loss rate 1/ct (in 10-6 cm-1), temperature (in °C) and total pressure (in Torr). A gas mixture of 398.9±2.0 (2sigma) mol-ppm of CO2 in air (Ar: ~1 mol-% ; O2: ~20.95 mol-%; N2: ~ 78.05 mol-%) is used in this work.