de A study recorded the blood mercury levels inmicrograms per liter g l of 4134 pregnant British women enrolled in the Avon Longitudinal Study of Parents and Children The published findings include the following statement Blood mercury levels ranged from 0 17 to 12 8 g l The 5th 10th 25th 50th 75th 90th and 95th percentiles were 0 81 0 99 1 35 1 86 2 52 3 33 and 4 02 g l respectively J Golding et al Dietary predictors of maternal prenatal blood mercury levels in the ALSPAC birth cohort study Environmental Health Perspectives 121 2013 pp 1214 1218 doi 10 1289 ehp 1206115 Macmillan Learning What are the range and the interquartile range for this distribution Range Interquartile range