. 2016 Jan 4;4:e1543. doi: 10.7717/peerj.1543

Table 1. Summary of the circumscribed circle diameters (µm) for WT and the mutants obtained by the SEM analyses.

		WT	ΔpurH	ΔpurC	ΔpurK
K10T-1 at 6 h	Median	1.87	1.31	1.35	1.43
	P (Wilcoxon)		(<2.2E--16)^a	(<2.2E--16)^a	(<2.2E--16)^a
	Mean ± S.D.	1.96 ± 0.59	1.35 ± 0.39	1.40 ± 0.42	1.53 ± 0.48
+0.2 mM adenine at 6 h	Median	1.82	1.59	1.70	1.63
	P (Wilcoxon)		(<2.2E--16)^a	(2.99E--10)^a	(<2.2E--16)^a
	P (Wilcoxon)	(0.002373)^b	(<2.2E--16)^b	(<2.2E--16)^b	(<2.2E--16)^b
	Mean ± S.D.	1.89 ± 0.57	1.68 ± 0.56	1.76 ± 0.54	1.74 ± 0.56
K10T-1 at 9 h	Median	1.44	1.54	1.42	1.61
	P (Wilcoxon)		(2.3E--11)^a	(0.1079)^a^,^*	(2.20E--16)^a
	P (Wilcoxon)	(<2.2E–16)^b	(<2.2E–16)^b	(9.98E–05)^b	(<2.2E–16)^b
	Mean ± S.D.	1.48 ± 0.43	1.65 ± 0.60	1.45 ± 0.38	1.69 ± 0.40

Notes.

The parentheses indicate the P values obtained by the Wilcoxon Sum Rank test.

P value when compared to the WT values in the same media.

P value when compared to the same strain in K10T-1 medium at 6 h.

The asterisks indicate no statistically significant difference in size relative to that of WT in the same medium (P > 0.05).