Table 2.

Summary of Fitting Parameters Determined in This Work

Collagen Type	Solvent Condition	Standard Model Fits		Curved Model Fits
		p (nm)	Δp (nm)	p (nm)	Δp (nm)	κo (nm−1)	Δκo (nm−1)
Rat I	water	59	17	102	21	0.015	0.003
Rat I	100 μM KCl	40	8	57	14	0.014	0.003
Rat I	1 mM KCl	70	15	105	21	0.011	0.001
Rat I	10 mM KCl	91	9	89	11	0.000	N/A
Rat I	100 mM KCl	120	22	120	46	0.000	N/A
Rat I	1 mM HCl	39	8	57	11	0.016	0.002
Rat I	10 mM KCl + 1 mM HCl	75	15	117	26	0.010	0.001
Rat I	100 mM KCl + 1 mM HCl	103	10	101	18	0.000	N/A
Human I	100 mM KCl + 1 mM HCl	86	8	88	14	0.000	N/A
Human II	100 mM KCl + 1 mM HCl	98	7	101	10	0.002	N/A
Human III	100 mM KCl + 1 mM HCl	84	7	83	11	0.001	N/A
Rat I	20 mM acetic acid	33	7	49	8	0.018	0.002
Human I	20 mM acetic acid	38	9	59	10	0.017	0.001
Human II	20 mM acetic acid	57	18	97	17	0.017	0.002
Human III	20 mM acetic acid	44	11	69	14	0.017	0.002

Fit parameters are averages of the values from independent $\langle R^2\left(s\right)\rangle$ and $\langle \cos \theta \left(s\right)\rangle$ fits of the data; errors, Δ, represent the error in these estimates. N/A indicates uncertainties that are unphysically large. The total contour lengths of collagen traced in each condition is provided along with a comprehensive list of fitting parameters and χ² values in Table S1.