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Fig. 1.

image

Percentage deviations between the present energy levels (horizontal lines in black), the experimental ones (NIST) and previous works: W07 refers to Witthoeft et al. (2007), R15 refers to Radžiūtė et al. (2015), W16 refers to Wang et al. (2016), D12 refers to Dong et al. (2012), W18 refers to Wang et al. (2018), L10 refers to Ludlow et al. (2010), L11 refers to Liang et al. (2011), T12 refers to Tayal (2012), and T07 refers to Tayal (2007).

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