Figure 2: Histograms of Figure 1(c) data: plasma density (CODIFH1) versus plasma beta (CODIFH1) for the entire tail season of 2002. Left hand column: the median of binned plasma density versus beta; right hand column: the gradient of the median line. Top row beta scale shows the BROPS transition; bottom row shows LOBEBR. Vertical dashed lines show the statistical BROPS boundary condition (top row) and the LOBEBR boundary condition (bottom row). 
