A system associated with a sensing roll and a mating roll for collecting roll data of the mating roll, the system comprising: a first plurality of sensors located at axially spaced-apart locations of the sensing roll, wherein each sensor of the first plurality enters a region of a nip between the sensing roll and the mating roll during each rotation of the sensing roll to generate a first respective sensor signal comprising a pressure value; a second plurality of sensors located at axially spaced-apart locations of the sensing roll, wherein each sensor of the second plurality enters the region of the nip during each rotati on of the sensing roll to generate a second respective sensor signal comprising a pressure value, wherein each sensor of the first plurality has a corresponding sensor in the second plurality which is associated with a same respective axial location on the sensing roll but is spaced-apart circumferentially; and a processor to receive a sensor signal, the received sensor signal comprisi ng one of the first respective sensor signal and the second respective sensor signal, characterized in that upon receiving the sensor signal, the processor operates to: determine a particular one of the sensors of the first plurality or second plurality which generated the received sensor signal, determine membership of the particular one sensor based on which plurality of sensors the particular one sensor is a member, based upon a rotational position of the mating roll relative to a reference position, determine which one of a plurality of circumferential tracking segments associated with the mating roll enters the region of the nip substantially concurrently with the particular one sensor entering the region of the nip, and store the received sensor signal using the determined one tracking segment and the determined membership. a first plurality of sensors located at axially spaced-apart locations of the sensing roll, wherein each sensor of the first plurality enters a region of a nip between the sensing roll and the mating roll during each rotation of the sensing roll to generate a first respective sensor signal comprising a pressure value; a second plurality of sensors located at axially spaced-apart locations of the sensing roll, wherein each sensor of the second plurality enters the region of the nip during each rotati on of the sensing roll to generate a second respective sensor signal comprising a pressure value, wherein each sensor of the first plurality has a corresponding sensor in the second plurality which is associated with a same respective axial location on the sensing roll but is spaced-apart circumferentially; and a processor to receive a sensor signal, the received sensor signal comprisi ng one of the first respective sensor signal and the second respective sensor signal, characterized in that upon receiving the sensor signal, the processor operates to: determine a particular one of the sensors of the first plurality or second plurality which generated the received sensor signal, determine membership of the particular one sensor based on which plurality of sensors the particular one sensor is a member, based upon a rotational position of the mating roll relative to a reference position, determine which one of a plurality of circumferential tracking segments associated with the mating roll enters the region of the nip substantially concurrently with the particular one sensor entering the region of the nip, and store the received sensor signal using the determined one tracking segment and the determined membership. determine a particular one of the sensors of the first plurality or second plurality which generated the received sensor signal, determine membership of the particular one sensor based on which plurality of sensors the particular one sensor is a member, based upon a rotational position of the mating roll relative to a reference position, determine which one of a plurality of circumferential tracking segments associated with the mating roll enters the region of the nip substantially concurrently with the particular one sensor entering the region of the nip, and store the received sensor signal using the determined one tracking segment and the determined membership.