Index | Element | I.S. |  Z  | Conf. | Level | ¡÷E (eV) | Method | Ref. | |
1 | Fe | H | 26 | 1S | 9277.73 | +2.2E-1 | THR | R8 | |
2 | Fe | H | 26 | 1S | 2S1/2 | 9277.65 | COMP | R303 | |
3 | Fe | H | 26 | 1S | 2S1/2 | 9277.76 | 4.E-2 | COMP | R401 |
4 | Fe | H | 26 | 1S | 2S1/2 | 9277.65 | COMP | R404 |
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'I.S.' ---------- the isoelectronic sequence
'Z' ---------- atomic number
'Conf.' ---------- configuration
'Level' ---------- the notation of energy level
'E' ---------- the ionization potential
'¡÷E' ---------- error for ionization potential
'Method' ---------- the method by which the data is produced
'Ref.' ---------- the reference