Table 1.

Summary of Intergenerational Intervals Measurements

Measurement	Mean Value (years)
By family reconstitutions:
Mothers:
Age at first birth	22.8
Mean age at children's births	30.3
Age at last birth	38.7
Fathers:
Age at first birth	26.2
Mean age at children's births	34.4
Age at last birth	43.7
By genealogical reconstructions:
Distinct intervals:
All intervals	31.7
Female intervals	28.9
Male intervals	34.5
Mean value per genealogy:
All intervals	30.4
Female intervals	26.2
Male intervals	34.6
Maternal lineages	28.7
Paternal lineages	35.0
Founders' lineages	30.2