Table 2.

Gas source localization error (m) in the three experiments, using the instantaneous concentration, the bout frequency with $\mu +3\sigma$ threshold or the bout frequency with optimum threshold.

Experiment	Instantaneous Concentration	Bout Frequency $(\mathit{\mu }+3\mathit{\sigma })$	Bout Frequency (Optimum Threshold)
1	0.94	4.32	1.16
2	4.0	3.31	2.22
3	1.22	5.07	0.77
Mean	2.05	4.23	1.38