Raven could see 0.7 & beyond.

Not 100% sure that's a wave 1 but wave 2 did reach as low as expected. So assuming that's the case Raven could reach between 0.5 & 1.4 on it's wave 3. With a standard wave 5 $0.7 is a reasonable minimum target. The smaller areas are common wave 3 targets the larger is wave 3's potential range.