Table 1. Summary of the number of tracked flights in each category of experience that display ‘Turn Back and Look’ (TBL) behaviour or arcing.

Experience group	Trip no	Visual: TBL/arcs (n)	Radar: arcs @start (n)	Radar: arcs @end (n)	Arcs @Both (n)	No. loops Median (range)
1	1st	17 (18)	16 (18)	9 (14)	9 (14)	3 (0–6)
2	2nd & 3rd	5 (9)	4 (9)	2 (6)	1 (6)	2 (1–4)
3	> 6th	1 (11)	0 (11)	0 (8)	0 (8)	1 (1–3)

Visual = arcs recorded by observer at start of flight. Radar = arcs recorded at the start and end of the flight from the track. Number of tracks (n) vary because arcing at the beginning was identified in all tracks (N = 38) and arcing at the end for just complete tracks (N = 28).