Outer fixed-point Inner fixed-point Full explicit Full recursive
Only I 1.76 10-6 2.18 10-6 4.70 10-6 1.74 10-4
Phosphoric acid 2.34 10-6 2.97 10-6 4.72 10-6 2.91 10-4
Gallic acid 2.03 10-6 2.68 10-6 6.30 10-6 6.23 10-4
Iron-chromium 3.04 10-4 1.15 10-5 3.59 10-5 1.29 10-3