preferred_name: No drift; limb holds 90 (or 45) degrees for full 10 seconds
preferred_name_lc: no drift; limb holds 90 (or 45) degrees for full 10 seconds
label: No drift; limb holds 90 (or 45) degrees for full 10 seconds
label_lc: no drift; limb holds 90 (or 45) degrees for full 10 seconds