A fit of t/c data, red circles, for the series Ac-Hel-Alan-tL-Inp2-K4-W-NH2, n = 4 through 14, measured in water at 2 °C. The upper boundary of the green zone corresponds to t/c calculated for cLt = 0.5, paired with its wAla(n) parameter set. The lower boundary, which gives a slightly poorer fit, is calculated for cLt = 0.3, paired with its wAla(n) set. For the former, as noted in the Experimental Section, a c state N-capping parameter of 6.4 was fitted to the value of the n = 14 data point; for the latter, the corresponding value was 6.2. The remaining required modeling parameters A = 0.80 and B = 0.17 have been assigned previously from t/c data.3a