Quarternary diatom abundance of sediment core CRP-1 (Table 2)

Numbers represent occurence in a count of 300 valves. <1 = whole specimens observed in sample but not recorded in initial count of 300 valves. <0.1 = identifiable fragments observed本数据集的数值代表300个瓣壳（valve）计数中的出现频次。 <1 表示在样本中观察到完整个体，但未被计入初始的300个瓣壳计数中。 <0.1 表示观察到可识别的碎片。