Higher average velocity was previously allowed as long as no individual event would exceed +4.0 m/s but the IAAF removed this rule in 2010.
On the website of Decathlon 2000 are used the following terms for wind assistance:
v event with wind >2.0 m/s and <=4.0 m/s and wind average for 3 events <=2.0 m/s
w one event with wind >4.0 m/s and wind average for 3 events <=2.0 m/s
v. all events with wind <=4.0 m/s and wind average for 3 events > 2.0 m/s (IAAF rule since 01/01/2010)
W one event with wind >4.0 m/s and wind average for 3 events > 2.0 m/s (IAAF rule until 31/12/2009)
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v and w are valid for all records and lists
W and v. are not valid for WR or NR
for example:
v +3,0 / +2,3 / -0,5 / +1,60
w +0,1 / -1,0 / +5,8 / +1,63
v. +2,2 / +1,6 / +3,1 / +2,30
W +1,2 / +4,2 / +3,4 / +2,93