Module type PTFE-1 PTFE-2 PTFE-3 PES-1 PES-2 PES-3
N 3 6 9 4 8 12
φ (m2m−3 ) 120.31 240.62 360.93 125.6 251.19 376.79
Φ (%) 5.88 11.76 17.64 5.54 11.08 16.61