Figure 5
Two panels labeled “(a) Rolling Weibull shape (delta)” on the left and “(b) Rolling Weibull scale (theta)” on the right. In panel (a), the horizontal axis is labeled “Aging months” and ranges from approximately 20 to 60 in increments of 20 units, and the vertical axis is labeled “delta” and ranges from approximately 6 to 10 in increments of 2 units. A single line is plotted, starting near 9.2 at early aging months, rising above 10 during the initial period, then gradually declining with fluctuations, and ending near 5 at approximately 60 aging months. In panel (b), the horizontal axis is labeled “Aging months” and ranges from approximately 20 to 60 in increments of 20 units, and the vertical axis is labeled “theta” and ranges from approximately 1.05 to 1.09 in increments of 0.01 units. A single line is plotted, starting near 1.055, showing small fluctuations early, then gradually increasing over time, and ending at 1.09 at approximately 60 aging months. Note: All numerical values are approximated.Rolling Weibull parameters