A new in-beam electron spectrometer was used to measure electron conversion intensities of cascade transitions between yrast levels of the nuclei listed above. A few 2+\ensuremath{'}\ensuremath{\rightarrow}2+ transitions were also measured. Altogether, 103 electron lines were measured during and between cyclotron bursts of 25-62-MeV $\ensuremath{\alpha}$ particles. The conversion coefficients, based on $\ensuremath{\gamma}$ intensities from previous work at this laboratory, are compatible with the assignments of all but one of three transitions previously studied in this laboratory. The exception is the 1015-keV transition in $^{78}\mathrm{Kr}$, earlier obscured by a 1013-keV transition due to Al. These yrast level energies are correlated with a semi-empirical model. The complementary nature of measurements of in-beam angular distributions of $\ensuremath{\gamma}$ rays and measurements of electron conversion coefficients is discussed.[NUCLEAR REACTIONS $^{70}\mathrm{Ge}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV, $^{72}\mathrm{Ge}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV, $^{74}\mathrm{Ge}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV, $^{76}\mathrm{Ge}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV, $^{76}\mathrm{Se}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV, $^{78}\mathrm{Se}(\ensuremath{\alpha},2n)$, $E=25$ MeV, $^{80}\mathrm{Se}(\ensuremath{\alpha},2n)$, $E=25$ MeV, $^{82}\mathrm{Se}(\ensuremath{\alpha},2n)$, $E=25$ MeV, $^{112}\mathrm{Sn}(\ensuremath{\alpha},2n)$, $E=33$ MeV, $^{114}\mathrm{Sn}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV, $^{116}\mathrm{Sn}(\ensuremath{\alpha},2n)$, $E=33$ MeV, $^{118}\mathrm{Sn}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV, $^{120}\mathrm{Sn}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV, $^{122}\mathrm{Sn}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV, $^{124}\mathrm{Sn}(\ensuremath{\alpha},2n)$, $E=25$ MeV, $^{130}\mathrm{Ba}(\ensuremath{\alpha},4n)$, $E=62$ MeV, $^{130}\mathrm{Ba}(\ensuremath{\alpha},2n)$, $E=33$ MeV, $^{134}\mathrm{Ba}(\ensuremath{\alpha},4n)$, $E=62$ MeV, $^{136}\mathrm{Ba}(\ensuremath{\alpha},4n)$, $E=62$ MeV, $^{136}\mathrm{Ba}(\ensuremath{\alpha},2n)$, $E=27.5$ MeV; measured in-beam ce intensities of transitions between yrast levels; from earlier $\ensuremath{\gamma}$ intensities deduced ce coefficients to test level assignments; compared usefulness of angular distributions and ce coefficients; compared yrast level energies with EXP model.]