Table A.1: Times of primary minima for AD Boo. O-C values are calculated for the ephemeris given in Eq. (1) assuming a circular orbit. Observing methods are: PG photographic; V visual; PE photoelectric or CCD. Times marked with an asterisk were published after we completed the ephemeris calculations; including them makes no significant changes.

HJD	rms	rms	O-C	Observing	Reference
- 2 400 000	publ.	adopt.	days	method
15 552.681		0.0320	0.0426	PG	S68
16 576.720		0.0320	0.0221	PG	-
16 605.709		0.0320	0.0478	PG	-
16 880.830		0.0320	0.0175	PG	-
17 329.796		0.0320	0.0524	PG	-
17 660.792		0.0320	0.0393	PG	-
19 439.923		0.0320	-0.0038	PG	-
20 244.712		0.0320	0.0193	PG	-
23 612.695		0.0320	-0.0156	PG	-
23 612.706		0.0320	-0.0046	PG	-
26 190.436		0.0320	-0.0082	PG	S63
26 767.648		0.0320	0.0067	PG	-
27 183.483		0.0320	0.0114	PG	-
27 212.436		0.0320	0.0011	PG	-
27 609.605		0.0320	-0.0408	PG	S68
28 219.931		0.0320	-0.0129	PG	-
28 962.610		0.0320	-0.0356	PG	S63
29 014.430		0.0320	0.0642	PG	-
30 439.803		0.0320	0.0292	PG	S68
32 659.663		0.0320	0.0592	PG	-
33 023.667		0.0320	-0.0468	PG	-
37 016.535		0.0320	0.0236	PG	S63
37 018.539		0.0320	-0.0412	PG	-
37 018.585		0.0320	0.0048	PG	-
37 351.647		0.0320	-0.0112	PG	-
40 711.396		0.0150	-0.0048	V	O119 (1970), VB74
41 042.409		0.0150	-0.0009	V	O124 (1971)
41 042.411		0.0150	0.0011	V	-
41 048.614		0.0150	-0.0024	V	-
41 071.381		0.0150	0.0078	V	O125 (1971), VB74
41 104.453		0.0150	-0.0211	V	-
41 135.498		0.0150	-0.0083	V	O126 (1971)
41 135.503		0.0150	-0.0033	V	-
41 162.412		0.0150	0.0113	V	-
41 402.385		0.0150	0.0026	V	B3 (1972), VB74
41 402.393		0.0150	0.0106	V	B4 (1972), VB74
41 433.423		0.0150	0.0085	V	B3 (1972), VB74
41 764.378		0.0150	-0.0456	V	B8 (1973), VB74
41 764.413		0.0150	-0.0106	V	-
41 795.459		0.0150	0.0033	V	B9 (1973), VB74
41 824.387		0.0150	-0.0320	V	-
41 853.381		0.0150	-0.0013	V	B10 (1973), VB74
42 186.454		0.0150	-0.0062	V	B15 (1974)
42 275.417		0.0150	-0.0019	V	B17 (1974)
42 614.686		0.0150	-0.0173	V	BA78
42 860.8760		0.0150	-0.0153	V	BS97
42 937.427		0.0150	-0.0102	V	B28 (1976)
42 997.442		0.0150	0.0094	V	B29 (1976)
44 079.417		0.0150	-0.0017	V	B44 (1979)
44 704.1985	0.0005	0.0007	0.0001	PE	Z83
44 731.0935	0.0005	0.0007	0.0006	PE	-
44 766.2627	0.0003	0.0004	0.0001	PE	-
45 074.5133	0.0005	0.0035	-0.0016	PE	B60 (1982)
45 082.781		0.0150	-0.0091	V	BS97
45 101.407		0.0150	-0.0024	V	B60 (1982)
45 442.761		0.0150	-0.0015	V	BS97
46 216.495		0.0150	-0.0014	V	I86
46 216.508		0.0150	0.0117	V	-
46 907.472		0.0150	-0.0059	V	-
46 963.339		0.0150	0.0033	V	B84 (1987)
47 161.910		0.0150	-0.0312	V	BS97
47 219.865		0.0150	-0.0028	V	-
47 246.7620	0.0010	0.0014	-0.0003	PE	This paper
47 248.8312	0.0002	0.0003	0.0001	PE	-
47 383.313		0.0150	0.0095	V	B89 (1988)
47 579.8410	0.0010	0.0014	0.0008	PE	This paper
48 026.7022	0.0002	0.0003	-0.0003	PE	-
48 357.704		0.0150	-0.0076	V	BS97
48 407.372	0.001	0.0043	0.0090	PE	B98 (1991)
48 438.3944	0.0006	0.0009	-0.0007	PE	-
49 501.7627	0.0003	0.0004	0.0008	PE	BS97
52 745.6521	0.0012	0.0017	0.0007	PE	MK04
52 758.0641		0.0035	-0.0001	PE	N04
53 006.3222		0.0035	0.0011	PE	N05
53 124.2389		0.0035	-0.0042	PE	-
53 461.4575*	0.0004		-0.0011	PE	H06
53 463.5256*	0.0013		-0.0018	PE	D05

References are: B = BBSAG Bulletin, followed by volume number and year of publication; BA78 = Baldwin (1978); BS97 = Baldwin & Samolyk (1997); D05 = Diethelm (2005); H06 = Hübscher et al. (2006); I86 = Isles (1986); MK04 = Maciejewski & Karska (2004); N04 = Nagai (2004); N05 = Nagai (2005); O = Orion (Diethelm & Locker 1970a, 1971a-c), followed by volume number and year of publication; S63 = Strohmeier et al. (1963); S68 = Strohmeier et al. (1968); VB74 = van Buren (1974); his data are taken from B and O; Z83 = Zhai et al. (1983).