Key for drop lines: W = Winter (centered on Jan.) Sp = Spring (Apr.) Su = Summer (July) F = Fall (Oct.)

Key for drop lines: W = Winter (centered on Jan.) Sp = Spring (Apr.) Su = Summer (July) F = Fall (Oct.)

Key for drop lines: W = Winter (centered on Jan.) Sp = Spring (Apr.) Su = Summer (July) F = Fall (Oct.)

Key for drop lines: W = Winter (centered on Jan.) Sp = Spring (Apr.) Su = Summer (July) F = Fall (Oct.)

Key for drop lines: W = Winter (centered on Jan.) Sp = Spring (Apr.) Su = Summer (July) F = Fall (Oct.)

Key for drop lines: W = Winter (centered on Jan.) Sp = Spring (Apr.) Su = Summer (July) F = Fall (Oct.)

Key for drop lines: W = Winter (centered on Jan.) Sp = Spring (Apr.) Su = Summer (July) F = Fall (Oct.)

Key for drop lines: W = Winter (centered on Jan.) Sp = Spring (Apr.) Su = Summer (July) F = Fall (Oct.)