Figure 4: Headspace partial pressures of O2 and CO2 inside low density polyethylene (LDPE) film packages having different perforations (A:without perforations, B:2 perforations) at (a) 5°C,(b) 12.5°C,(c) 20°C, kept for storage under modified atmospheres. The plotted values are means of headspace measurements per packaging treatment along with their standard deviations.