Figure 9.
The two-panel graph depicts time series results plotted against elapsed time in days on the x-axis for two locations labelled A 17 S and B 22 T 3. Panel a illustrates the flow rate in millilitres per minute on the y-axis. A 17 S shows values fluctuating mainly between 26 and 28 millilitres per minute, with sharp, short drops at about 420 and 500 days. B 22 T 3 remains lower and more stable, varying mostly between 25 and 26 millilitres per minute, with a gradual decrease to about 24 millilitres per minute around 400 days before increasing again. Panel b illustrates pressure change in the vessel in megapascals on the y-axis. Measured values for both series decrease rapidly from 0 to negative values within the first 100 days. A 17 S stabilises near negative 0.03 megapascals, while B 22 T 3 continues decreasing to around negative 0.045 megapascals. Modelled curves follow similar trends, with transient upward deviations at about 300 and 500 days.(a) Water flow rate measured in circuits of A17-S and B22-T3; (b) comparison between modelling results and measurements for A17-S and B22-T3 in Phase 2 – neon through-diffusion test