Boytsov et al., 1983 data measured in the 1st (left) and 2nd (right) experiment cycle with different detectors compared with Mannhart’s and this evaluation. The data of the 2nd cycle and those measured with the anthracene detector are shown as used for the evaluation, while the data measured with stilbene and plastic scintillator detectors are shown as retrieved from EXFOR. (a) 1st cycle. (b) 2nd cycle.