Coccosphere-units of sediment core GIK23411-5

Age given in calendar years. Coccosphere-unit: Conversion of coccoliths to hypothetical coccospheres by taking an average number of coccoliths per coccosphere.年龄以日历年（calendar years）为单位。球石球单元（Coccosphere-unit）：通过求取每个球石球所包含的颗石（coccoliths）平均数量，将颗石换算为假想的球石球。