Table 4.

Range of median gap durations at each age in ms.

	Month 3	Month 4	Month 5	Month 9	Month 12	Month 18
Infant	345.5–902.5	326–921	323–1408	542.5–3297	615–1872	485–1270
Mother	372.5–905.5	412–938	391–1204	445–1005	210–817	135–1145.5