Bolt 19.19

[robin1]

@boldwarrior

Formula for 200m using 0.24 reaction might be a bit old since we can have Electronic Timing for reaction times now.
Best reaction of his meet 0.13
100m of 9.58 - 0.13 = 9.45
9.45 * 2 = 18.9
18.9 + 0.13 = 19.03 as his current fastest (without so many other runs before hand)

The 0.24s reaction time is for the time keeper (who reacts to a visual stimulus), not the athlete.