Table 2 Coverage index (\({T}_{c}\)) of the tracking method (M4) for two experiments

M1: Baseline

5.1%

40.8%

M2: M1 + Registration

32.3%

62.8%

M3: M1 + Matching tree

35.6%

63.2%

M4: M1 + Matching tree + Registration

53.4%

74.2%

S1: M4 on an increased time-step (8 to 80 h)

54.1%

70.4%

S2: M4 (and M1) restricted to k stable periods

(k: mean value of k)

77.1% (24.1%)

(k = 3.4)

82.0% (52.2%)

(k = 1.8)