−87.89 sec−1\mathrm {-87.89 ~ sec^{-1}}−87.89 sec−1
87.89 sec−1\mathrm {87.89 ~sec^{-1}}87.89 sec−1
−27.89 sec−1\mathrm {-27.89 ~ sec^{-1}}−27.89 sec−1
27.89 sec−1\mathrm {27.89 ~ sec^{-1}}27.89 sec−1