Table 1. Decomposition of G₁ variability.

	G1 noise for λTG1	Noise due to size control	Size-independent noise
WT (exp)	0.55	0.31 (32%)	0.45 (68%)
WT (sim)	0.52	0.23 (19%)	0.47 (81%)
6 × Cln3 (exp)	0.44	0.25 (32%)	0.36 (68%)
6 × Cln3 (sim)	0.33	0.13 (15%)	0.31 (85%)
6 × Cln2 (exp)	0.48	0.30 (39%)	0.37 (61%)
6 × Cln2 (sim)	0.43	0.25 (35%)	0.34 (65%)
6 × Cln3, 6 × Cln2 (exp)	0.37	0.18 (24%)	0.32 (76%)
6 × Cln3, 6 × Cln2 (sim)	0.40	0.10 (6%)	0.39 (94%)

WT, wild type.

Decomposition of G₁ variability in terms of deterministic size control and a residual that is attributable to molecular noise under the assumption that λT_G1 can be decomposed into the sum of a suitable deterministic function of the initial protein content f(P(0)) plus a stochastic variable. The chosen function for f(P(0)) is the hyperbola described in Fig. 3e. The experimental data are from ref. 13.