The top four panels are the average modelled and slit filtered comparison of the line sample collected on the 29th at PA = 55/145/235/325, the middle four panels are the average modelled and slit filtered comparison of the line sample collected on the 30th at PA = 55/145/235/325 and the bottom four panels are the average modelled and slit filtered comparison of the line sample collected on the 30th at PA = 10/100/190/280. For all frames the pointing offset was 06. The black lines are the median of all the individual modelled transistion lines (The individual lines are all quite similar and the median therefore looks almost identical to the individual lines). The red lines are the average observed line profile (described in Sect. 4). The sample of lines plotted and used for the average are those listed in Table 2.