The number of competitors entered (174) became not high enough to have 1,5 minutes start interval (rules say 180). Conclusion: The competition was held with 2 minutes start interval and butterfly.



Definitions
* Group is runners punching at control # 7 less than 15 seconds apart. If a third runner is punching 15 seconds after the second runner, all three runners constitute one group.

* If a group consists of three or four runners, the group is divided into subgroups consisting of as many pairs as the group may be divided into (three runners gives 3 subgroups, four runners gives 6 subgroups.

* The runners are at an equal level if the running time at control # 7 for the slowest of them is less than 20% slower than the fastest in the group/subgroup. Runners not being at the same level will usually not be expected to be togheter at control # 13 any way (At a competition like JWOC these differences often will be due to significant different skills).

Runner groups
See attached data. There were 36 groups, 8 of them consisting of three runners and 1 of four runners.

Results


Conclusions for this competiton
A majority of runners are split during the butterfly. Runners at same level are split by the butterfly, but they tend to be split any way. More than 2/3 of the runners at different level are split by the butterfly, but only 1/3 of them are split when having the same loop. The butterfly had a significant effect on runners at different level and not the same effect on runners at the same level.

Kjell Blomseth
appreciate comments - kjeblo[a]frisurf.no