Gregga said:Actually, De Maar's data's on Strava are from his power meter (409w for the mirador climb, that's about 6w/kg if he's 68-70kg as internet seems to tell) http://www.strava.com/activities/108969475/segments/2375687973
De Maar doing 6w/kg was about one minute behind Quintana, so 6,5w/kg for Quintana seems credible but not Froomesque (6.8 w/kg for same duration in Vuelta 2012)
Cheers for the link, doesn't show for me though (would be good to have the actual SRM chart). Keep in mind that if you don't have the weight exact then it's still very problematic.
406 / 68 = 5.97 * 1.06 = 6.33
406 / 66 = 6.15 * 1.06 = 6.52
406 / 70 = 5.80 * 1.06 = 6.15
I have a hard time believing Marc de Maar, or anyone outside the top 8 managed >6 W/kg even for 17 minutes. 17' @ 6.2 - 6.3 for Quintana isn't really unexpected.