Dataset: auto_windshield.csv

Source: V. Sharma, A. Sarkar, R. Acharya, H.K. Bagla, P.K. Pujari (2022).
"Utilization of Accelerator and Reactor Based Nuclear Analytic Techniques
for Chemical Characterization of Automobile Windshield Glass Samples and
Potential of Statistical Analyses Using Trace Elements Towards Glass Forensics,"
Forensic Science International, 334,   https://doi.org/10.1016/j.forsciint.2022.111262

Description: Measurements of various chemical elements in windshields for 25 automobile models.
Among various statistical methods, included hierarchical cluster analysis (Ward's method)
and principal components analysis. Both analyses were based on 16 chemical contents 
(Sc through Th, columns 13:28 in the data frame).

Variable Names:
ID
make
make1   (Useful for dendogram labels)
model 
year
SiO2_mn   (not used)
NaO2_mn   (not used)
MgO_mn    (not used)
Al2O3_mn  (not used)
Na2O_mn   (not used)
Fe2O3_mn  (not used)
CaO_con   (not used)
Sc_con    (used)
Cr_con    (used)
Co_con    (used)
Zn_con    (used)
Rb_con    (used)
Zr_con    (used)
Cs_con    (used)
Ba_con    (used)
La_con    (used)
Ce_con    (used)
Eu_con    (used)
Yb_con    (used)
Hf_con    (used)
Ta_con    (used)
Sm_con    (used)
Th_con    (used)
... SDs and uncertainties for elements (not used)