# [1] z, [2] chi(z) (Mpc/h)
0.000000000000000000e+00 0.000000000000000000e+00
1.000000000000000000e+00 2.312680164121228700e+03
2.000000000000000000e+00 3.625903452087460209e+03
3.000000000000000000e+00 4.448979805408229367e+03
4.000000000000000000e+00 5.019256490124302218e+03
5.000000000000000000e+00 5.442759346824006570e+03
