Table 1a: World records by lane for 200 m (from [11]).
Lane	Athlete	t200	Location	Date
1	John Carlos USA	20.12A	Mexico City	16 Oct 68
	Daniel Effiong NIG	20.15	Zurich	04 Aug 93
2	Robson da Silva BRA	20.00	Barcelona	10 Sep 89
3	Michael Johnson USA	19.32	Atlanta	01 Aug 96
4	Pietro Mennea ITA	19.72A	Mexico City	12 Sep 79
	Michael Johnson USA	19.79	Goteborg	11 Aug 95
5	Michael Johnson USA	19.66	Atlanta	23 Jun 96
6	Joe DeLoach USA	19.75	Seoul	28 Sep 88
7	Carl Lewis USA	19.80	Los Angeles	08 Aug 84
8	Michael Johnson USA	19.79	New Orleans	28 Jun 92

Aside from the 100 m WR (where the reaction time is known, t_reac = +0.174 s [9]), a (perhaps liberal) reaction time of +0.16 s has been assumed. By using the indoor races to calculate parameters, one is inherently removing the possibility of wind-assisted times. This has not been done in the case of the 100 m WR (where the wind-reading was +0.7 m/s [9]), which may provide some source of error.

Note: Prictchard [6] offers a simple method of accounting for wind assistance and drag. Making use of his work, one finds that in fact Donovan Bailey's 9.84 s WR corrects to a 9.88 s still-wind reading. This is surpassed by Frank Fredericks 9.86 s run with a wind reading of -0.4 m/s, which adjusts to roughly 9.84 s [7]. So, if we account for wind contributions, a similar time is obtained anyway.

In light of the discussions of Tibshirani's extension with relation to observed velocity curves, the parameters (13) are cited only for comparison with older values (although predictions using (13) are offered in Table 2, as a comparison to Keller's results). Otherwise, this work will use only the parameters of (14).