Entity Vil-stm11 (entity_id = 29) has two measurements at depth_sample = 52mm with the same interp_age and isotope values (d18O and d13C). Entity Vil-stm27 (entity_id = 31) has two measurements at depth_sample = 51, 81, 110, 630, 660 and 786.5mm with the same interp_age (the same to the nearest whole number in some case) but different isotope values. Entity Vil-car1 (entity_id = 32) has 41 sets of samples with the same depth_sample (with the same interp_age but different isotope values). Entity Vil-stm1 (entity_id = 33) has two measurements at depth_sample = 116.75, 139.25, 141, 142.75, 158, 297.75mm with the same interp_age but different isotope values.