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Procedure I: Plotting Isotherms (In Part A of this Lab, you will use data from the TAO/TRITON buoy array to determinewhether El Niño or La Niña conditions were present during two different years.1. On Figure 2, find and draw the 26°C isotherm.To draw the isotherms:a. Find a pair of values in each column that are greater and less than 26. Forexample, in the 150° E column, the temperature is 27.3° at 50 m and 25.1° at75 m. The isotherm is between 50 m and 75 m, but it would be slightly closerto the 25.1°C because 26°C is closer to 25.1°C than to 27.3°C.b. The 26°C isotherm has been started between 140° E and 180°. Continue the26°C isotherm across the Pacific Ocean to 90° W.c. Draw the 23°C, 20°C, 17°C, 14°C, 11°C, and 9°C isotherms.2. Using colored pencils, shade the areas between the isotherms, using this key orsimilar color scheme: (5 pts)Table 1: Color key oC 3. On Figure 3, find and draw the 26°C isotherm.To draw the isotherms:a. Find a pair of values in each column that are greater and less than 26. Forexample, in the 150°E column, the temperature is 27.3° at 50 m and 25.1° at75 m. The isotherm is between 50 m and 75 m, but it would be slightly closerto the 25.1°C because 26°C is closer to 25.1 °C than to 27.3 °C.b. The 26 °C isotherm has been started between 140°E and 180°. Continue the26 °C isotherm across the Pacific Ocean to 90° W.c. Draw the 23 °C, 20 °C, 17 °C, 14 °C, 11 °C, and 9 °C isotherms. Using colored pencils, shade the areas between the isotherms, using the color key youused in question 2.

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