Table G.1: B stars, HD 202850 is $\sigma$ Cyg.
HD IUE images ST M $_{\rm v}$ T $_{\rm eff}$

58350 + 308199 207127 B5 Ia - 7.0 13600

86440 + 309513 208239 B5 Ib¹ - 5.4 13600

164353 + 310172 208836 B5 Ib² - 5.4 13600

22928 h 318889 215103 B5 III - 2.2 15000

83754 h 318884 214903 B5 V - 1.2 15400

23302 h 307921 206899 B6 III - 1.85 14100

90994 + 309219 207975 B6 V - 0.9 14000

183143 h 306550 205659 B7 Ia - 7.1 12200

23630 + 308147 207078 B7 III - 1.5 13200

21071 h 314767 211334 B7 V - 0.6 13000

166937 h 309111 207849 B8 Ia - 7.1 11200

12301 h 307282 206276 B8 Ib - 5.2 11200

23850 + 311245 209867 B8 III - 1.2 12400

23324 + 307922 206900 B8 V - 0.25 11900

21291 h 307280 206274 B9 Ia - 7.1 10300

202850 w 315099 211614 B9 Iab - 6.2 10300

212593 x 333852 113556 B9 Iab² - 6.2 10300

149212 h 306474 205555 B9 III - 0.6 11000

108767 h 318885 214904 B9 V + 0.2 10500

186882 w 309596 208354 B9.5 III - 0.3 10500

232121 302249 - B7 III SX Cas

5679 309083 - B7 III U Cep

**Table G.1:** B stars, HD 202850 is $\sigma$ Cyg.
HD		IUE images	ST	M $_{\rm v}$	T $_{\rm eff}$
58350	+	308199	207127	B5 Ia	-	7.0	13600
86440	+	309513	208239	B5 Ib¹	-	5.4	13600
164353	+	310172	208836	B5 Ib²	-	5.4	13600
22928	h	318889	215103	B5 III	-	2.2	15000
83754	h	318884	214903	B5 V	-	1.2	15400
23302	h	307921	206899	B6 III	-	1.85	14100
90994	+	309219	207975	B6 V	-	0.9	14000
183143	h	306550	205659	B7 Ia	-	7.1	12200
23630	+	308147	207078	B7 III	-	1.5	13200
21071	h	314767	211334	B7 V	-	0.6	13000
166937	h	309111	207849	B8 Ia	-	7.1	11200
12301	h	307282	206276	B8 Ib	-	5.2	11200
23850	+	311245	209867	B8 III	-	1.2	12400
23324	+	307922	206900	B8 V	-	0.25	11900
21291	h	307280	206274	B9 Ia	-	7.1	10300
202850	w	315099	211614	B9 Iab	-	6.2	10300
212593	x	333852	113556	B9 Iab²	-	6.2	10300
149212	h	306474	205555	B9 III	-	0.6	11000
108767	h	318885	214904	B9 V	+	0.2	10500
186882	w	309596	208354	B9.5 III	-	0.3	10500
232121		302249	-	B7 III			SX Cas
5679		309083	-	B7 III			U Cep

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