[|-4 4 -1 0>, |-13 10 0 -1>]

<<1 4 10 18 4 13 25 12 28 16|| meantone (huygens) |-25 18 0 0 -1> 17.02685

<<1 4 10 6 4 13 6 12 0 -18|| meanenneadecal 729/704: |-6 6 0 0 -1> 21.42298

<<1 4 10 -13 4 13 -24 12 -44 -71|| meanpop 17537553/16777216: |-24 13 0 0 1> 21.54276