Table 1.

Dry mass measurement precision at different magnifications

Magnification	OPD noise, nm	FOV area, μm*μm	Temporal error, %	Spatial error, %	Combined temporal and spatial error, %
10×	1.68 (0.21)	1,184*888	1.29 (0.51)	1.54 (0.57)	1.97 (0.86)
20×	1.29 (0.04)	592*444	1.05 (0.37)	1.21 (0.48)	1.71 (0.75)
40×	0.88 (0.16)	296*222	0.57 (0.23)	1.15 (0.46)	1.30 (0.70)

The measurement errors of each cell were quantified as the coefficient of variation (%) of its dry mass measurements. The table lists the mean of the errors quantified in more than 50 cells with the SD of the population in the brackets (see Materials and Methods for details). Note that the spatial displacement used in this study corresponds to the big displacement in Aknoun et al. (26).