Flue gas analysis on a Worcester Highflow 3.5 BF

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Are these results ok ? Buying a property and asked for a gas check on the boiler.
Flue Gas Analysis
O2 (%) 20.9
CO (ppm) 0
CO2 (%) ####.#
Ratio 0.0000
Pressure (mBar) -0.07
Excess Air (%) ####.#
Efficiency Net (%) ####.#
Temperature Flue (C) 21
Temperature Inlet (C) 21
Temperature Net (C) 0
followed by another test
Flue Gas AnalysisO2 (%) 13.6
CO (ppm) 27
CO2 (%) 4.2
Ratio 0.0006
Pressure (mBar) -0.01Excess Air (%) 184.8
Temperature Dew Point (C) 43
Efficiency NetHE (%) 107.3
Temperature Flue (C) 24
Temperature Inlet (C) 21
Temperature Net (C) 3
 
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The readings for that boiler are ok ( not all are required
The boiler will be around 25 years old if it’s a BF model
 

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