AT KEW OBSERVATORY, 1890 TO 1900. 
221 
Diurnal Inequality. Phase Angles. 
§ 14. Tables IX., X., and XI. contrast the phase angles for different species of days 
and for years of sunspot maximum (1892 and 1895) and minimum (1890, 1899, 1900). 
Table IX.—Diurnal Inequality, 24-hour term. Phase Angle. 
Quiet clays. 
Ordinary days. 
Disturbed 
days. 
1892-95. 
1890-1900. 
1890, 1899, 
1900. 
1892-95. 
1890-1900. 189 j9oo 
1890-1900. 
January . . 
o f 
240 4 
o / 
242 40 
o / 
245 11 
o / 
245 5 
O/O/ 
250 51 257 56 
o / 
270 49 
February . . . 
232 9 
233 38 
240 50 
237 9 
241 44 249 15 
265 27 
March .... 
222 24 
224 55 
228 47 
232 17 
232 52 233 47 
257 17 
April .... 
209 35 
213 26 
217 42 
222 1 
224 30 223 35 
248 9 
May. 
217 7 
216 47 
217 58 
219 57 
221 2 224 10 
241 30 
June. 
206 55 
207 24 
202 39 
212 46 
212 15 212 8 
240 15 
July. . . . . 
210 35 
210 58 
211 20 
214 32 
214 18 215 12 
234 26 
August .... 
221 26 
224 55 
227 51 
225 6 
227 53 229 12 
260 6 
September . 
227 46 
229 2 
229 41 
234 5 
236 37 237 23 
267 12 
October . . . 
227 40 
227 12 
224 21 
236 32 
239 48 1 239 52 
279 46 
November . . . 
232 14 
240 26 
251 24 
242 29 
248 1 254 51 
289 33 
December . . . 
239 53 
251 53 
261 50 
248 37 
254 47 263 35 
258 32 
Table X.— Diurnal Inequality, 12-hour term. Phase Angle. 
Quiet days. 
Ordinary days. 
Disturbed ! 
days. 
1892-95. 
1890-1900. 
1890, 1899, 
1900. 
1892-95. 
1890-1900. 
1890,1899, 
1900. 
1890-1900. 
January . . . 
o / 
20 35 
o / 
27 43 
° / 
36 25 
o / 
22 50 
o / 
29 13 
o / 
44 45 
o / 
-28 28 
February . . . 
30 25 
31 3 
34 52 
26 7 
27 6 
33 16 
9 11 
March .... 
35 21 
37 12 
45 15 
34 14 
35 29 
38 24 
17 2 
April .... 
37 48 
38 0 
41 47 
38 23 
38 36 
40 55 
33 48 
May. 
52 8 
55 3 
61 14 
49 44 
50 12 
54 13 
1 55 
June .... 
46 58 
47 23 
43 20 
46 29 
46 1 
44 55 
-54 54 
July. 
46 20 
49 0 
52 20 
47 12 
47 26 
48 50 
6 46 
August .... 
57 15 
57 52 
63 47 
56 21 
56 32 
59 37 . 
5 5 
September. . . 
55 32 
57 27 
62 3 
53 38 
54 38 
56 49 
40 19 
October . . 
33 13 
35 34 
34 13 
33 21 
34 57 
35 47 
31 55 
November . 
24 29 
33 33 
50 39 
23 9 
27 39 
38 14 
- 3 49 
December . . . 
28 4 
27 54 
37 5 
17 32 
21 20 
29 53 
-29 25 
