Row	Measure	Predictor	t	df	p	β	SE
1	Completion time	0°: linear (features in memory)	−19.90	647.97	< 0.001	−2.513	0.126
2	Completion time	0°: quadratic (features in memory)	8.44	634.74	< 0.001	0.907	0.107
3	Completion time	45°: linear (features in memory)	−16.84	666.64	< 0.001	−2.281	0.135
4	Completion time	45°: quadratic (features in memory)	10.13	650.40	< 0.001	1.065	0.105
5	Completion time	90°: linear (features in memory)	−6.824	23.29	< 0.001	−2.855	0.418
6	Completion time	90°: quadratic (features in memory)	4.359	119.78	< 0.001	0.841	0.193
7	Completion time	135°: linear (features in memory)	−6.532	4.88	.001	−1.115	0.170
8	Completion time	135°: quadratic (features in memory)	8.175	3.91	.001	2.346	0.287

Each row shows the results of a predictor variable.

The p-values were calculated with the Satterthwaite’s degrees of freedom method.