Table 2.

 R wave amplitude (mV) in leads V1 and V6 taken from the tables of Rijnbeek and the centile charts of Davignon

	Rijnbeek median (98th centile)		Davignon median (98th centile)
	V1	V6	V1	V6
0–1 month	1.1 (2.05)	1.0 (1.78)	–	–
1–3 months	1.23 (2.07)	1.55 (2.23)	0.9 (1.8)	1.2 (2.15)
3–6 months	1.32 (2.20)	1.65 (2.73)	1.0 (2.0)	1.3 (2.25
6–12 months	1.12 (2.14)	1.7 (2.79)	0.9 (2.0)	1.25 (2.25)
1–3 years	1.08 (2.11)	1.79 (2.96)	0.85 (1.75)	1.3 (2.25)
3–5 years	0.95 (1.78)	1.98 (3.14)	0.8 (1.75)	1.5 (2.5)
5–8 years	0.63 (1.48)	1.97 (2.98)	0.7 (1.4)	1.65 (2.8)
8–12 years	0.54 (1.14)	2.18 (3.24)	0.5 (1.25)	1.6 (2.5)
12–16 years	0.48 (1.18)	2.02 (3.05)	0.4 (1.0)	1.5 (2.3)

The values for Rijnbeek are for males only whereas Davignon gives combined data for a group of males and females.