L=60    transformer 0.152  cache 0.103  delta -0.050  CI [-0.067,-0.032]  SIGNIFICANT (transformer)
L=250   transformer 0.143  cache 0.172  delta +0.029  CI [+0.010,+0.049]  SIGNIFICANT (cache)
L=1000  transformer 0.149  cache 0.213  delta +0.064  CI [+0.044,+0.083]  SIGNIFICANT (cache)