Sagittal plane localisation error with template laser KU100 DTFs for different target DTFs. The dots indicate baseline error of the laser DTFs (las) and error obtained with target photogrammetric DTFs (pho). The envelopes represent the 25th and 75th percentile of the errors obtained with the DTFs in the groups of Table 4 as targets. The black line corresponds to chance rate, i.e. random guessing.