delta=0.25 k=2: min T* +0.09551 (a=0.7) pair spacings [0.849]
delta=0.25 k=4: min T* +0.02553 (a=0.8) pair spacings [0.896 0.927 0.896]
delta=0.25 k=6: min T* +0.02945 (a=0.8) pair spacings [0.904 0.943 0.949 0.943 0.903]
