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{"isotope":"198Pt","element":"platinum","mass":197.9679,"uncertainty":0.00001}
{"isotope":"196Hg","element":"mercury","mass":195.96583,"uncertainty":0.00002}
{"isotope":"198Hg","element":"mercury","mass":197.96677,"uncertainty":3e-06}
{"isotope":"199Hg","element":"mercury","mass":198.96828,"uncertainty":3.6e-06}
{"isotope":"200Hg","element":"mercury","mass":199.96833,"uncertainty":3.6e-06}
{"isotope":"201Hg","element":"mercury","mass":200.9703,"uncertainty":4.8e-06}
{"isotope":"202Hg","element":"mercury","mass":201.97064,"uncertainty":4.8e-06}
{"isotope":"204Hg","element":"mercury","mass":203.97349,"uncertainty":3e-06}
{"isotope":"203Tl","element":"thallium","mass":202.97234,"uncertainty":7.8e-06}
{"isotope":"205Tl","element":"thallium","mass":204.97443,"uncertainty":7.8e-06}
{"isotope":"204Pb","element":"lead","mass":203.97304,"uncertainty":7.2e-06}
{"isotope":"206Pb","element":"lead","mass":205.97447,"uncertainty":7.2e-06}
{"isotope":"207Pb","element":"lead","mass":206.9759,"uncertainty":7.2e-06}
{"isotope":"208Pb","element":"lead","mass":207.97665,"uncertainty":7.2e-06}
{"isotope":"230Th","element":"thorium","mass":230.03313,"uncertainty":7.8e-06}
{"isotope":"232Th","element":"thorium","mass":232.03805,"uncertainty":9e-06}
{"isotope":"234U","element":"uranium","mass":234.04095,"uncertainty":7.2e-06}
{"isotope":"235U","element":"uranium","mass":235.04393,"uncertainty":7.2e-06}
{"isotope":"238U","element":"uranium","mass":238.05079,"uncertainty":9.6e-06}