RI
|
refractive index; more precisely the refractive index is 1.518xxxx.
The remaining 8 measurements are percentages by weight of oxides. |
Na
| sodium |
Mg
| manganese |
Al
| aluminium |
Si
| silicon |
K
| potassium |
Ca
| calcium |
Ba
| barium |
Fe
| iron |
type
|
The fragments were originally classed into seven types, one of which
was absent in this dataset. The categories which occur are
window float glass (WinF : 70),
window non-float glass (WinNF : 76),
vehicle window glass (Veh : 17),
containers (Con : 13),
tableware (Tabl : 9) and
vehicle headlamps (Head : 29).
|
fgl
data frame has 214 rows and 10 columns.
It was collected by B. German on fragments of glass
collected in forensic work.