Atmosphaeric Preassure on the dyno is a little low?
Within reason for a enclosed dyno room at 22c, but at that time of year in an open dyno cell I would expect to see 1014mb. But it also depends which correction factor he is using, which aint shown on the graph?
102.9%?
102.9% is the amount of correction based on using air temp, room pressure and humidity.
Depending on the correction factors used the "corrected power reading" can vary by 4-5% by using different correction factors. SAE-J1349 - DIN70020 - EEC80.1269 or ISO 1585 some give bigger numbers some give lower number based on the atmospheric readings. The idea is to keep readings constant under all condition and all year around.