Hi. If you just use the planets, the Sun, the Moon and Pluto, then its probably closer to a bowl than anything else. But because there is such a large gap between Mars and Jupiter, the bowl shape does not coincide with the emphasis on the lower hemisphere. I don't think its worth giving much weight to shaping when interpreting this chart. Having said that, when looking at Chiron's role in this chart, it might be worth considering the fact that it puts a handle on that bowl and makes it a bucket. I don't know if you'll find an interpretation of Chiron as a bucket handle - and even if you do, whether it would be reliable - but you could still look at general interpretations of bucket handles as focal planets, and then apply this to Chiron in this chart.