I am not sure what all these stats mean, perhaps someone could tell me?

It is a GWS E-Starter Trainer Aircraft (GW/ESTARTER-EPS-350C)

Length: 725 mm (30.54 in)
Wing Span: 960 mm (37.8 in)
Wing Area: 17.1 dm^2 (265 sq.in)
Flying Weight: 480 g (16.9 oz)
Wing Loading: 28 g/dm^2 (9 oz/sq.ft)
Propeller Size: 7" - 10"

The ones in red i need help with.