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Table 6.

Number of journals whose relative change in IF (Δf_r(c)) due to their highest-cited paper was greater than the threshold in the first column. For example, 3,421 journals had their IF boosted more than 10% by their most cited paper. Publication years = 2015–2016, Citation year = 2017. Data from JCR. Total number of papers in data set is 3,090,630, published in 11,639 journals

Relative volatility, Δf_r(c*) (threshold)	No. journals above threshold	% all journals
10%	3,403	29.2%
20%	1,218	10.5%
25%	818	7.0%
30%	592	5.1%
40%	387	3.3%
50%	231	2.0%
60%	174	1.5%
70%	140	1.2%
75%	127	1.1%
80%	124	1.1%
90	101	0.9%
100%	50	0.4%
200	14	0.12%
300%	5	0.04%
400%	1	0.01%

Relative volatility, Δf_r(c*) (threshold)	No. journals above threshold	% all journals
10%	3,403	29.2%
20%	1,218	10.5%
25%	818	7.0%
30%	592	5.1%
40%	387	3.3%
50%	231	2.0%
60%	174	1.5%
70%	140	1.2%
75%	127	1.1%
80%	124	1.1%
90	101	0.9%
100%	50	0.4%
200	14	0.12%
300%	5	0.04%
400%	1	0.01%

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