Value for proton g factor
type: ConstantValue
has unit: UNITLESS
informative reference: http://physics.nist.gov/cuu/Constants/bibliography.html
standard uncertainty: 0.000000046
standard uncertainty SN: 4.6E-8
value: 5.585694713
value SN: 5.585694713E0
website: http://physics.nist.gov/cgi-bin/cuu/Value#mid