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About ptaff.ca
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Our suggestions

Well-thought articles for question-digging readers.

Elaboration of our reflexions

Well-thought articles for question-digging readers.

 
GPL-distributed Python software that draws sunrise, sunset and daylight graphs.

Sunrise/sunset hours, all year long

GPL-distributed Python software that draws sunrise, sunset and daylight graphs.

 
Estimation of the air volume consumed by human activities.

“Volumes of air” project

Estimation of the air volume consumed by human activities.