Table 1.

Cumulative air pollutant results in Mexico City children pre and post-cocoa.

	Pre-cocoa	At the last cocoa intervention day
PM2.5 24 h*	23.2 ± 3.3	23.9 ± 1.4
PM2.5 48 h*	49.8 ± 11.9	46 ± 0
PM 2.5 72 h*	77.1 ± 12.4	69.6 ± 0.48
PM2.5 7 days*	195 ± 10.05	171.6 ± 3.39
PM10 24 h*	53.3 ± 10.7	53.2 ± 2.4
PM10 48 h*	113.8 ± 31	103.6 ± 1.9
PM10 72 h*	174.4 ± 27.9	156.7 ± 0.48
PM10 7 days*	432.9 ± 25.3	381.3 ± 5.5
Ozone 24 h§	969.2 ± 13.3	1258 ± 0.9
Ozone 48 h§	2072 ± 314	2513 ± 44
Ozone 72 h§	3327 ± 493	3662 ± 109
Ozone 7 days§	8218 ± 266	8111 ± 110

The numerical values shown in the table represent means (± standard deviation).

^*μ g/m³,

^§ppm (parts per million). The air pollutant values were taken from the closest monitoring station (<5 miles) to the children's residency and school.