6.697 - 148.3 \eta - 1.035 \chi_- + 1603 \eta^2 - 0.96 \eta \chi_+ + 3.022 \chi_+ \chi_- - 4.27 \chi_-^2 - 7388 \eta^3 - 37.87 \eta^2 \chi_- - 15.85 \eta \chi_+ \chi_- + 12060 \eta^4 - 13.17 \eta \chi_+ \chi_-^2 + 11.61 \eta \chi_-^3 - 2.666 \chi_+^2 \chi_-^2 + 4.661 \chi_-^4
equal mass adjustment:
0.9376 |\chi_-|