Table 3: $uvby{\beta }$ indices obtained for IP Per and comparison stars. The pairs below the star names are the number of points collected for each object in uvby and $\beta$ , respectively. The numbers below the measures show the errors (in mmag). The values given by Olsen (1996, private communication) are listed in the bottom part.
Star V b-y m₁ c₁ $\beta$

(mag) (mag) (mag) (mag) (mag)

IP Per 10.374 0.239 0.144 0.834 2.763

(49,5) 6 6 6 15 9

C1 = HD 22418 6.963 0.280 0.163 0.420 2.646

(49,6) 4 3 4 9 4

C2 = HD 21913 7.627 0.297 0.136 0.473 2.640

(21,5) 4 3 4 9 5

C1 = HD 22418 6.962 0.281 0.167 0.419 2.645

C2 = HD 21913 7.628 0.296 0.132 0.473 2.640

**Table 3:** $uvby{\beta }$ indices obtained for IP Per and comparison stars. The pairs below the star names are the number of points collected for each object in *uvby* and $\beta$ , respectively. The numbers below the measures show the errors (in mmag). The values given by Olsen (1996, private communication) are listed in the bottom part.
Star	V	b-y	m₁	c₁	$\beta$
	(mag)	(mag)	(mag)	(mag)	(mag)
IP Per	10.374	0.239	0.144	0.834	2.763
(49,5)	6	6	6	15	9
C1 = HD 22418	6.963	0.280	0.163	0.420	2.646
(49,6)	4	3	4	9	4
C2 = HD 21913	7.627	0.297	0.136	0.473	2.640
(21,5)	4	3	4	9	5
C1 = HD 22418	6.962	0.281	0.167	0.419	2.645
C2 = HD 21913	7.628	0.296	0.132	0.473	2.640

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