Carbon dioxide (ppm)

Season

San José

Guachipelín

Heredia

Rancho Redondo

Turrúcares

Cipresal

Mid-summer drought

578 ± 46

631 ± 71

539 ± 27

514 ± 56

530 ± 17

502 ± 19

Wet season

618 ± 34

714 ± 89

555 ± 37

556 ± 35

618 ± 53

574 ± 63

Transition period

589 ± 24

631 ± 94

545 ± 44

554 ± 12

589 ± 52

568 ± 43

Methane (ppb)

Season

San José

Guachipelín

Heredia

Rancho Redondo

Turrúcares

Cipresal

Mid-summer drought

2007 ± 79

1981 ± 140

1978 ± 42

1932 ± 119

2009 ± 119

1965 ± 135

Wet season

2170 ± 343

2311 ± 353

2094 ± 264

2115 ± 292

2368 ± 264

2118 ± 220

Transition period

2139 ± 66

2159 ± 65

2131 ± 102

2109 ± 59

2294 ± 102

2120 ± 53