x1 = NO
x2 = sGCfast
x3 = NO_sGCfast
x4 = NO_sGCfast_6coord
x5 = NO_sGCfast_5coord
x6 = sGCslow
x7 = NO_sGCslow
x8 = NO_sGCslow_6coord
x9 = NO_sGCslow_6coord_NO_int
x10 = NO_sGCslow_5coord
x11 = NO_sGC_5coord_tot
x12 = sGC_inact_tot