Region	Estimate	SE	t Value	df	p Value	ci.lb	ci.ub
Tropical (4–23°)	−0.0790	0.0572	−1.3803	71	.1718	−0.1930	0.0351
Sub–tropical (26–35°)	−0.0926	0.0389	−2.3798	71	.0200	−0.1703	−0.0150
Temperate (36–53°)	−0.0012	0.0442	−0.0267	71	.9788	−0.0893	0.0869
Polar (62–78°)	0.0308	0.0330	0.9334	71	.3538	−0.0350	0.0966