Phonetics and the IPA 9, Exercise 1: predicting formants

Lowest F1: the two close vowels have a low F1 ([i] 240, [u] 250); [i] is
fractionally lowest in the table.
Highest F2: [i] (2400 Hz).

Reasoning: F1 tracks height. [i] and [u] are close, so F1 is low; [a] is open,
so F1 is high (850). F2 tracks backness. [i] is front, so F2 is high; [u] is
back and rounded, so F2 is low (595). [a] sits between (1610).