(a) The variations of n_e in loop L1 at position X = 300 pixel for over the time period of 2 hours. Horizontal line in red marks the mean n_e over this time period. (b) Same as (a) but for loop L2 for over the time period of 47 minutes. (c) Uniform variation of n_e along L1 after 30 and 45 minutes from the start time of L1 observations. (d) Spatial variation of n_e along L2 after 30 and 40 minutes from the start time of L2 observations. Two Grey horizontal lines are plotted to highlight the increase in n_e from higher part of L2 towards its footpoint (FP). Orange arrows point to loop footpoints.