## Appendix A
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline
**Year** & **Instrument 1** & **Difference** & **Slope** & **R2** & **Range** & **Points** & **Comment** & **Ref.** \\ \hline  & & & & FIR measuring cylinder & & & & \\
2010 & MMS MultiGas 2030 & \(-\)0.8\% & - & - & 8\% & 1 & & [95] \\
2019 & AVL Sesam & \(<\)1\% & - & - & 1000 ppm & 4 & & [196] \\
2000 & _P: Nicolet Prodigy 460_ & \(<\)0.5\% & - & - & 0-10 ppm & 3 & & [66] \\
2000 & _P: Nicolet_ & - & 1.02 & 1.00 & 0-19 ppm & 5-10 & & [178] \\
2000 & _P: Nicolet_ & -3\% & - & - & 19 ppm & 2 & Mix (CO\({}_{2}\) H\({}_{2}\)O) & [178] \\
2005 & _P: T-T General CR2000_ & 8.7\% & - & - & 4800 ppm & 1 & [110] \\
2015 & _P: Spectrum 2, PerkinElmer_ & \(-\)1.2\% (\(-\)30\%.15\%) & 0.99 & 1.00 & 0-500 ppm & 15 & & [181] \\ \hline  & & & & & & & \\  & & & & & & & & \\
1990 & Nicolet Sesam & \(-\)4.2\% & - & - & 1-10 g/min & means & G, D\(\alpha\) & [165] \\
1990 & Mattson Horibus & \(-\)0.80 & 0.87 & 0-250 ppm & 25 & G, Hebs M\(\ddot{\rm e}\)s & [112] \\
1991 & Bio-Rad Digital FTS-60 & 0.82 & 0.96 & 0-400 ppm & 20 & Many G, Hebs M\(\ddot{\rm e}\)s & [169] \\
1993 & Mattson ERA & 4\% (-51\%.68\%) & 0.94 & 0.98 & 0-0.8\% & 390 & 2.5 y (G, CNG) & [170] \\
1993 & Nicolet REGA & 0.9\% (-50\%.10\%) & 1.20 & 0.86 & 0-0.8\% & 268 & 2.5 y (G, CNG) & [170] \\
1994 & Nicolet REGA & \(-\)0.8\% (-6\%.7\%) & 0.96 & 1.00 & 4-265 ppm & 12 & G & [146] \\
1994 & Nicolet REGA & 0.04\% & - & - & 178 ppm & 1 & G, Heal M\(\ddot{\rm e}\)s & [171] \\
2000 & _P: Nicolet Prodigy 460_ & 3.5\% & - & - & 5-26 ppm & 2 & G & [66] \\  & & & & & & & \\  & & & & & & & & \\
1990 & Nicolet Sesam & 4.4\% & - & 1-10 g/min & means & G, D\(\ddot{\rm e}\)s & [165] \\
2010 & AVL Sesam (MKS) & \(-\)5\% & - & 0.99 & 20-45 g/kWh & 25 & G, Hebs M\(\ddot{\rm e}\)s & [123] \\
2010 & AVL Sesam & \(-\)2.5\% (\%.9\%.9\%) & - & - & 5-10 g/kWh & 6 & 6 snowwellies & [195] \\
2005 & _P: T-T General CR2000_ & 12\% & - & - & 2500 ppm & 1 & engine & [110] \\
2005 & _P: T-T General CR2000_ & 1.3\% & - & - & 10 g/km & 1 & G & [110] \\
2006 & _P: T-T General CR2000_ & 0.87 & 0.99 & 0-600 ppm & cycle & G & [163] \\
2020 & _P: Brakur Matrix MCS\({}^{2}\)_ & - & 1.00 & 0.98 & 0-2000 ppm & cycle & D & [102] \\  & & & & & & & \\  & & & & & & & & \\
1985 & Prototype & - & 1.04 & 0.98 & 0-37 g/min & 80 & G & [164] \\
1998 & WV Sesam & 1.08 & 0.99 & 0-6 g/min & 65 & G\(\ddot{\rm e}\)s & [113] \\
2013 & MEX-4000 FIT & 5.8\% (-4\%.8\%) & - & - & 0.27-0.3 g/min & 6 & G\(\ddot{\rm e}\)s (B0-100-20, M15-30) & [179] \\
2017 & Gasnet CR2000 & 0.95 & 0.97 & 50-3000 mg/km & 15 & D\(\ddot{\rm e}\)s, G\(\ddot{\rm e}\)s, CNOG & [197] \\
2006 & _P: T-T General CR2000_ & \(-\)1.5\% (-11\%.4\%) & 0.95 & 0.98 & 0.5-11 g/km & 11 & G & [163] \\
2007 & _P: Nicolet_ & 0.90 & 0.90 & 0.1-1.1 g/min & 15 & G\(\ddot{\rm e}\)s & [92] \\
2018 & _P: Nicolet Analysis ICS_ & \(-\)4.7\% (-75\%.69\%) & 1.01 & 0.92 & 10–400 mg/km & 18 & D, CNG & [98] \\ \hline  & & & & & & & & \\ \end{tabular} \({}^{1}\)_P: particle (in italic). \({}^{2}\)_Computation on the road with PEMS_  
\end{table} 
Table 11: Comparisons of FTIR with CO analyzes (all NDIR). \begin{table}
\begin{tabular}{c c c c c c c c c} \hline
**Year** & **Instrument1** & **Difference** & **Slope** & **R2** & **Range** & **Points** & **Comment** & **Ref.