Location A reflects a newborn’s typical prenatal exposure during the study period, and constitute the baselines for comparison. Evidently, some level of prenatal exposure to deviations and non-extreme variability is relatively normal, including weeks of deficient or intense rainfall. Exposure to extreme events was relatively uncommon during the study period but would be expected to become more common under climate change. Other locations refer to the main effects (Fig. 4), including intense (C); deficient (D); intense and deficient (B), and moderate intense (E).