By varying the concentration of all components proportionally, we isolate the effect of the total concentration of gel (C Gel ). Fig. shows ∆P for each C Gel , which corresponds to C Alg . The average difference in driving pressure between baseline and clog ablation varies dramatically over an order of magnitude of C Gel . At C Gel = 0.02mg/mL, The boxes encompass the first to the third quartile. The whiskers extend 1.5 times the interquartile range. The experimental conditions for each plot correspond to those shown in Table .