From: Systematic Comparison of C3 and C4 Plants Based on Metabolic Network Analysis
CO2 (μbar) in the air
r in C3
r in C4
100
1.139
22.2282
380
4.33
70.7281
550
6.26
85.9654
800
9.11
87.1062
1000
11.39
88.0189