Before revision: One peak occurs at about (expressed by atomic numbers 85 through 105) strontium to ruthenium while the other peak is at about tellurium to neodymium (expressed by atomic numbers 130 through 145).
After revision: One peak occurs at about (expressed by atomic masses 85 through 105) strontium to ruthenium while the other peak is at about tellurium to neodymium (expressed by atomic masses 130 through 145).