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. 2007 Oct 31;2(10):e1086. doi: 10.1371/journal.pone.0001086

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van Hooft et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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{n ₁, n ₂, n ₃}: haplogroup. Black diamonds: mean annual rainfall in the three years before birth. Open diamonds: rainfall in the second year before birth. Grey diamonds: rainfall in the year of birth. Error bars: standard error (), except for the two lowest data points of haplogroup {1,1,2} in which the haplogroup was observed only once. Here they correspond to a chance ≥84% of sampling ≤1 (positive error bar) or ≥1 haplogroup (negative error bar). Sample sizes were equalized as much as possible.

Inline graphic — {n ₁, n ₂, n ₃}: haplogroup. Black diamonds: mean annual rainfall in the three years before birth. Open diamonds: rainfall in the second year before birth. Grey diamonds: rainfall in the year of birth. Error bars: standard error (), except for the two lowest data points of haplogroup {1,1,2} in which the haplogroup was observed only once. Here they correspond to a chance ≥84% of sampling ≤1 (positive error bar) or ≥1 haplogroup (negative error bar). Sample sizes were equalized as much as possible.