The generator matrix

 1  1  1  1  1  1  1  1  1  1  2  1  1  2  2  2  1  0  4  1  4  2  1  1
 0  2  0  0  0  0  0  0  0  2  2  6  6  6  0  6  6  2  2  2  2  6  4  2
 0  0  2  0  0  0  2  6  2  2  2  0  6  6  2  2  0  4  4  4  0  6  0  2
 0  0  0  2  0  2  2  6  0  0  0  6  2  4  2  6  4  0  4  0  6  2  4  4
 0  0  0  0  2  2  0  6  2  0  4  2  2  6  4  0  6  4  6  2  0  0  6  4
 0  0  0  0  0  4  0  0  0  0  0  0  0  0  4  0  0  4  4  4  4  4  4  0
 0  0  0  0  0  0  4  0  0  0  4  4  4  4  4  0  4  4  4  4  4  0  4  0
 0  0  0  0  0  0  0  4  0  4  4  4  0  4  0  4  0  0  4  0  0  0  4  0
 0  0  0  0  0  0  0  0  4  4  4  0  4  0  4  0  0  0  0  4  4  0  4  4

generates a code of length 24 over Z8 who´s minimum homogenous weight is 15.

Homogenous weight enumerator: w(x)=1x^0+58x^15+187x^16+282x^17+480x^18+838x^19+1483x^20+2186x^21+3556x^22+4756x^23+4886x^24+4884x^25+3700x^26+2284x^27+1482x^28+788x^29+428x^30+242x^31+142x^32+50x^33+28x^34+14x^35+11x^36+2x^37

The gray image is a code over GF(2) with n=96, k=15 and d=30.
This code was found by Heurico 1.16 in 12.5 seconds.