I am not pretending that any of this is super accurate. It is just indicative and I agree that the P&V chart, which you object to is 'cartoonish' since the vertical axis has no units of measurements. However, the only feature of the chart I am using is the blood ketone threshold values for indicating the start of nutritional ketosis (~0.5 mmol/l), low to high nutritional ketosis range 1.0 to 3.0 mmol/l) and the onset of starvation ketosis (> 3.0 mmol/l)

Converting the ketonix readings to an estimate of blood ketone levels provides a way of understanding a bit better what the ketonix values mean in terms of one's level of ketosis. For example the following screenshot shows the default colour band values of the Ketonix software for the 'nutritional settings' option.


Green range: 40 to 70 (~0.4 to 1.5 mmol/l)
Yellow range: 70 to 90 (~1.5 to 3.1 mmol/l)
Red range: > 90 (~> 3.1 mmol/l)

Based on the above here is my interpretation of the ketonix nutritional settings:
1) If blue you are probably not in ketosis
2) If green you have entered nutritional ketosis
3) If yellow you are well into ketosis and humming along
4) If red you may have been fasting to the point of starvation or you may have just finished intensive exercise.