Table 2. Water Contributions (at 25 °C) to the Static Dielectric Susceptibilities (χ_r = ϵ_r – 1) Calculated in This Study^a.

system	pore width (nm)	χrwater	χr∥water	χr⊥water
water		69.8(1.9)
1 M NaCl		52.6(1.2)
5 nm nanopore	5	37.7(1.0)	51.5(1.5)	10.0(0.2)
3-layer hydrate	0.9	15.4(0.7)	22.3(1.1)	1.38(0.10)
2-layer hydrate	0.6	11.4(0.5)	16.4(0.8)	1.31(0.01)
1-layer hydrate	0.3	4.4(0.2)	6.5(0.3)	0.25(0.02)

^aNote that the 95% confidence intervals (presented in parentheses) are drastically smaller than those presented in Table 1.