Coccosphere-units of sediment core GIK23400-3

Age given in calendar years. Coccosphere-unit: Conversion of coccoliths to hypothetical coccospheres by taking an average number of coccoliths per coccosphere.年龄以日历年标注。颗石球单位（Coccosphere-unit）：通过计算单颗颗石球的平均颗石粒数量，将颗石粒换算为假想颗石球。