3-3 JANUARY 20 10 10 20 30 40 50 60 70 80 80 70 60 50 O O O O O O O O O O O O O O O JANUARY 0 0 30 30 60 90 60 90 180 180 150 150 120 120 75 75 60 60 45 45 30 30 15 15 0 0 15 15 30 30 45 45 60 60 AG5f0302a Figure 3-2A.—Mean world temperature for January. JULY JULY 40^O 50^O 60^O 70^O 80^O 80^O 70^O 60^O 50^O 40^O 70^O 0 30 30 60 90 60 90 180 180 150 150 120 120 75 60 45 30 15 0 15 30 45 60 75 60 45 30 15 0 15 30 45 60 AG5f0302b O 90 Figure 3-2B.—Mean world temperature for July.