diff --git a/module3/exo3/co2_2_plot.png b/module3/exo3/co2_2_plot.png
new file mode 100644
index 0000000000000000000000000000000000000000..0b70d3a2e6b0e863951f14da72974e8a675c3ee0
Binary files /dev/null and b/module3/exo3/co2_2_plot.png differ