Atmospheric CO2 -- FWIW -- February, 2018

Scripps data:

Previously:

• December, 2017 (last month): 407.01
• May, 2017 (seasonal variation noted): 409.65
• February, 2017: (one year ago): 406.42
• Delta over one year: 1.3 ppm 
• 1.3 / 1 million =  0.0000013
• neither reproducible, nor statistically significant