Species-time relationships for the lung microbiota within individual patients. Given for individual adult patients are species-time relationships (STRs) for the microbiota (blue) and the chronic (orange) and intermittent (grey) colonizing taxa groups. Also given in each instance is the slope values (w) from the fitted STR models for the (M) microbiota and the (C) chronic and (I) intermittent colonizing taxa groups. All STRs were significant (P < 0.05 in all instances). Regression summary statistics are provided in Supplementary Table 2 and 3