Best Known Lattice Packing-Coverings in Dimension 1--8

Dim Packing-Covering constant for lattice Lattice
1 1
Z = (A1)*
2 1.154700
A2 = (A2)*
3 1.290994
(A3)*
4 1.362500
Ho4
5 1.449456
Ho5
6 1.411081
L6pc
7 1.494983
L7pc
8 1.414213
E8