Table 1.

Summary of μs-ALEX smFRET measurements on the 5 dsDNA samples. For each set of detector and sample, the position E of the peak and standard deviation σ of the best Gaussian fit (histogram width) to the corresponding histogram shown in Fig. 4 is reported as E ± σ.

Sample	d = 27 bp	d = 22 bp	d = 17 bp	d = 12 bp	d = 7 bp
E (Perkin-Elmer)	0.13 ± 0.10	0.25 ± 0.10	0.51 ± 0.13	0.78 ± 0.09	0.93 ± 0.05
E (Polimi)	0.16 ± 0.10	0.27 ± 0.11	0.51 ± 0.13	0.77 ± 0.09	0.93 ± 0.06