Table 2.

Positioning errors using two emitters obtained by a weak calibration procedure.

	Error Using Calculated Height			Error Using Known Height
Indexes of the Emitters	Mean	Std	Max	Mean	Std	Max
2–4	20.2 mm	7.9 mm	42.4 mm	13.7 mm	7.5 mm	34.1 mm
3–4	24.9 mm	11.6 mm	54.1 mm	8.6 mm	6.5 mm	26.9 mm