Dataset: pottery_Xigongqiao.csv Source: J. Zhu, J. Shan, P. Qiu, Y. Qin, C. Wang, D. He, B. Sun, P. Tong, S. Wu (2004). "The Multivariate Statistical Analysis and XRD Analysis of Pottery at Xigongqiao Site," Journal of Archaeological Science, Vol. 31, pp. 1685-1691. Chemical composition of 48 specimens at site. La - Cu in ppm SiO2 - MnO in % Code La Ce Sm Eu Yb Ni Zn As Cr Sb Th Rb Cs Ba Co Cu SiO2 Al2O3 Fe2O3 MgO CaO Na2O K2O MnO