Table 3.

Regression analysis of Figure 2.

Two parameter fit			One parameter fit
Slope	Intercept	RMSE	Intercept	RMSE	R 2	Panel	Source
0.657	0.558	0.0464	0.917	0.0649	0.944	(a)	Figure 1, unit GP-17-4, Smith and Zwislocki (1975)
0.404	0.755	0.0191	0.533	0.0350	0.977	(b)	Figure 1, unit E8F2, Westerman and Smith (1984)
0.754	−0.0415	0.0149	0.506	0.124	0.998	(c) circles	Figure 1, unit GP31/08, Yates et al. (1985)
0.469	1.02	0.0266	0.949	0.0276	0.943	(c) triangles	Figure 2, unit GP27/18, Yates et al. (1985)
0.575	0.436	NA	0.608	NA	NA	(c) crosses	Figure 1, GP31/13, Yates et al. (1985)
0.523	0.843	0.0140	0.897	0.0152	0.990	(c) plusses	Figure 2, GP27/04, Yates et al. (1985)
0.339	1.27	0.0173	0.829	0.0288	0.886	(d)	Figure 6, Sumner and Palmer (2012)
0.691	0.323	0.0473	0.775	0.0646	0.919	(e)	Figure 3, increment, Fay (1985)
0.451	0.790	0.0037	0.702	0.0090	0.998	(f)	Figure 6, Mogdans et al. (2017)
0.646	0.0431	0.0235	0.288	0.0745	0.994	(g)	Figures 1 and 2, Brown and Stein (1966)
0.291	0.590	0.0252	0.320	0.0509	0.856	(h)	Figure 3, Loewenstein (1956)
0.740	0.227	0.0477	0.720	0.0917	0.962	(i) crosses	Figure 3a, Martelli et al. (2013)
0.750	0.212	0.0950	0.740	0.127	0.877	(i) triangles	Figure 5, Martelli et al. (2013)
0.865	0.00965	0.0279	0.740	0.110	0.988	(i) circles	Figure 5, Martelli et al. (2013)
0.717	0.402	0.0599	0.803	0.0999	0.951	(i) squares	Figure 5, Martelli et al. (2013)
0.857	−0.0127	0.0901	0.692	0.165	0.932	(i) plusses	Figure 5, Martelli et al. (2013)
0.291	0.997	0.0279	0.572	0.0440	0.744	(j) circles	Figure 3, Gothilf et al. (1971)
0.288	0.858	0.0400	0.391	0.0443	0.294	(j) crosses	Figure 7, Gothilf et al. (1971)
0.805	0.0428	0.151	0.791	0.189	0.801	(k)	Figure 3, Bernays et al. (2002)
0.706	0.271	0.0127	0.751	0.0487	0.994	(l) crosses	Figure 2a, LiCl, Maes and Harms (1986)
0.754	0.135	0.0115	0.731	0.0725	0.997	(l) triangles	Figure 2a, NaCl, Maes and Harms (1986)
0.935	−0.347	0.0246	0.686	0.105	0.988	(l) circles	Figure 2a, KCl, Maes and Harms (1986)
0.537	0.620	0.0226	0.706	0.0246	0.975	(l) squares	Figure 2a, RbCl, Maes and Harms (1986)
0.448	0.761	0.0146	0.638	0.0171	0.964	(l) plusses	Figure 2a, CsCl, Maes and Harms (1986)
0.808	−0.352	0.0457	0.355	0.118	0.975	(m) crosses	Figure 2b, LiCl, Maes and Harms (1986)
0.754	−0.216	0.0350	0.367	0.123	0.990	(m) triangles	Figure 2b, NaCl, Maes and Harms (1986)
0.941	−0.806	0.0533	0.260	0.172	0.977	(m) circles	Figure 2b, KCl, Maes and Harms (1986)
1.06	−1.14	0.0426	0.194	0.160	0.979	(m) squares	Figure 2b, RbCl, Maes and Harms (1986)
0.579	0.118	0.0431	0.291	0.0479	0.927	(m) plusses	Figure 2b, CsCl, Maes and Harms (1986)
0.293	0.630	0.0546	0.160	0.100	0.826	(n) circles	Figure 10, Merivee et al. (2003)
0.650	0.439	0.0476	0.787	0.0752	0.966	(o) circles	Figure 7, 1 × 10 −5cd m−2, Sakmann and Creutzfeldt (1969)
0.321	1.26	0.0179	0.834	0.0564	0.967	(o) triangles	Figure 7, 1 × 10−3 cd m−2, Sakmann and Creutzfeldt (1969)
0.415	0.966	0.0205	0.768	0.0370	0.982	(o) crosses	Figure 7, 1 × 10−1 cd m−2, Sakmann and Creutzfeldt (1969)