Table 1.

The numbers of e-like and μ-like events observed in Kamiokande in 1988, compared with the prediction that did not take into account neutrino oscillations.²³⁾ The detector exposure was 2.87 kilo-ton · year. Only single-Cherenkov-ring events were used. About 90% of them were estimated to be due to charged-current ν_e and ν_μ interactions for e-like and μ-like events, respectively.

	Data	Monte Carlo Prediction
e-like events	93 ± 9.6	88.5
μ-like events	85 ± 9.2	144.0