Researchtable

On worlds with the Three level tech system enabled:

Tech-level	Research costs
1	{{{costs1}}}	{{{att1}}}	{{{def1}}}	{{{def_cav1}}}
2	{{{costs2}}}	{{{att2}}}	{{{def2}}}	{{{def_cav2}}}
3	{{{costs3}}}	{{{att3}}}	{{{def3}}}	{{{def_cav3}}}