Care Level 1:
4 measurements at minimum/10% of maximum and maximum volume

Care Level 2:
10 measurements at minimum/10% of maximum and maximum volume

Care Level 3:
10 measurements at minimum/10% of median and maximum volume

Care Level 4:
4 measurements at minimum/10% of maximum, median and maximum volume with pre-calibration 'as found' data

Care Level 5:
10 measurements at minimum/10% of maximum, median & maximum volume, with pre-calibration 'as found' data