Editor's NOTES: These data were key entered in 1999 by the NOAA Environmental Data Rescue Program. Excerpted from the Greenwich Photo-Heliographic Results: POSITIONS AND AREAS OF SUNSPOTS AND FACULAE FOR EACH DAY IN THE YEAR Col. 1. (1) Time when photograph was taken expressed in days and decimals of a day reckoning from midnight at commencement of year. (2) Place of observation -- Greenwich (G), Cape of Good Hope (C), Kodaikanal (K), Mauritius (M). (3) Date of photograph. Col. 2. Number of Spot Group in order of appearance and in continuation of the Group-numbers given in previous years. Groups seen on one day only are distinguished by the number of the Rotation during which they were observed and by a letter given in the order of their appearance. When there is no number in the second column, it is to be understood that there is a Facula unaccompanied by a Spot. Col. 3. Distance of Spot Group or Faculae from Sun's centre in terms of the Sun's radius. Col. 4. Position Angle of Spot Group or Faculae measured from the North pole of the Sun's axis in the direction N., E., S., W., N. Col. 5. Heliographic Longitude of the Spot Group derived from the measures. Col. 6. Heliographic Latitude of the Spot Group similarly derived. Col. 7. Area of Umbrae corrected for foreshortening in millionths of the Sun's visible hemisphere. Col. 8. Area of Whole Spots composing the Group similarly expressed. Col. 9. Area of each group of Faculae similarly expressed. The positions of Faculae relative to the Spots with which they are associated are indicated by the letters n, s, p, f, c, denoting respectively, north, south, preceding, following, concentric. In line with the date of each day is given in brackets for the time of photograph the position angle of the Sun's axis from the north point: the heliographic longitude and latitude of the centre of the disc: the total areas of Spots and Faculae for the day. C C Positions and Areas of S U N S P O T S and F A C U L A E for each Day in the Year C Greenwich 1874-1955 C C Column Fmt Description C----------------------------------------------------------------------- C 1- 4 I4 Century and Year e.g. 1878 C 5- 6 I2 Month -- 01 for January, 02 for February, 03 for March, etc. C 7 1X Blank C 8 A1 Station Code -- I=India; M=Mauritius; G=Greenwich C=Cape of Good Hope or blank C 9 1X Blank C 10-16 F7.4 Day of year and decimal day C 17-19 3X Blank C 20-24 I5 Group number - for group seen on one day only, the number is the Carrington Rotation number followed by a letter in the order of appearance. When no number appears, there is a Facula unaccompanied by a Spot. C 25 A1 Letter following Rotation number. C 26-27 2X Blank C 28-32 F5.3 r/R Distance from center of solar disk C 33-36 4X Blank C 37-41 F5.1 Position angle measured from N pole of Sun's axis. (If in parentheses, position angle of the Sun's axis from the north point) C 42 1X Blank C 43 A1 Left parenthesis when needed C 44-48 F5.1 Heliographic longitude (if in parentheses, center of disk) C 49 A1 Right parenthesis when needed C 50 1X Blank C 51 A1 Left parenthesis when needed C 52 A1 Plus or minus sign -- plus for north; minus for south C 53-56 F4.3 Heliographic Latitude (if in parentheses, center of disk) C 57 A1 Right parenthesis when needed C 58 A1 Left parenthesis when needed C 59-63 I5 Umbral area corrected for foreshortening in millionths of the Sun's visible hemisphere (for each day when in parentheses) C 64 A1 Right parenthesis when needed C 65 A1 Left parenthesis when needed C 66-71 I6 Total spot area similarly expressed (for each day when in parentheses) C 72 A1 Right parenthesis when needed C 73 A1 Left parenthesis when needed C 74-78 I5 Faculae area for each Group similarly expressed (for each day when in parentheses) CAUTION - In a number of cases, the Greenwich books list one facular area for two groups by using a parentheses. To handle this, we repeat the same area on both lines, rather than splitting the value. One can find these by checking total daily areas against the sum of the group areas. C 79-80 A2 Right parenthesis when needed or faculae information: Positions of faculae relative to spots -- n, s, p, f, c denote north, south, preceding, following, concentric respectively. ------------------------------------------------------------------------ SAMPLE DATA: C S o t DoY Group d Position Umbra Total Faculae YYYYMM a decday Numbere r/R angle Long Lat Area Area Area =============================================================================== 189301 I 318.255 2787a 0.970 (196.3) 317.3 +17.2 ( 3550)( 1080)( 3533) 189301 I 0.255 0.970 288.6 7.3 +17.2 75 189301 I 0.255 0.910 241.9 357.2 -26.8 455 189301 I 0.255 0.736 292.3 337.7 +13.8 179 189301 I 0.255 2787 0.966 257.2 8.4 -13.2 0 24 587C 189301 I 0.255 2787a 0.954 255.1 5.9 -15.3 6 19 189301 I 0.255 2787c 0.945 247.5 3.8 -22.3 0 17 379C 189301 I 0.255 2792 0.627 234.0 327.0 -24.3 0 4 189301 I 0.255 2792 0.616 228.6 324.3 -26.8 0 7 293C 189301 I 0.255 2792 0.569 235.2 323.4 -21.7 0 3 198301 I 0.255 2792a 0.580 230.7 322.7 -24.3 53 395 189301 I 0.255 2792 0.531 229.0 319.1 -23.3 2 10 189301 I 0.255 2792 0.470 227.9 315.2 -21.4 0 2 109C 189301 I 0.255 2792c 0.480 221.6 313.6 -24.1 16 102 189301 I 0.255 2800a 0.358 138.0 278.7 -18.5 2 14 . . . 189301 I 1.000 (293.3) (- 3.3)( 110)( 837)( 3521) 189301 I 1.490 0.973 242.7 353.4 -27.3 377 189301 I 1.490 0.862 287.9 334.4 +13.6 357 189301 I 1.490 2792a 0.754 240.7 322.8 -24.0 55 334 291C 189301 I 1.490 2792c 0.655 236.3 313.5 -24.0 10 86 98C etc. 192001 C 0.362 0.958 296.8 108 192001 C 0.362 0.936 286.6 221 192001 C 0.362 0.883 297.4 73 192001 C 0.362 0.760 294.1 82 192001 C 0.362 0.699 282.8 81 192001 C 0.362 9092 0.971 255.4 188.1 -14.9 8 31 554SF 192001 C 0.362 9096 0.157 358.0 112.2 + 5.9 1 4 192001 C 0.362 9095 0.172 114.8 102.9 - 7.2 96 424 192001 C 0.362 0.971 100.8 109 192001 C 1.0 (+ 2.4)(111.9) (- 3.1)( 105)( 459)( 1228) 192001 C 1.337 0.985 249.5 90 192001 C 1.337 0.970 287.0 117 192001 C 1.337 0.966 298.8 70 192001 C 1.337 0.860 288.5 81 192001 C 1.337 0.853 280.3 120 192001 C 1.337 9096 0.308 306.3 113.5 + 7.4 3 18 192001 C 1.337 9095 0.098 222.7 102.9 - 7.4 206 880 192001 C 1.337 0.940 103.3 91 192002 D 2.000 (+ 1.9)( 99.1) (- 3.2)( 209)( 898)( 569) 192002 D 2.252 0.942 277.4 125 192002 D 2.252 9096 0.502 290.8 115.1 + 7.3 5 11 192002 D 2.252 9095 0.310 255.6 104.6 - 7.5 248 1150 192002 D 2.252 0.909 101.9 177 192003 G 3.000 (+ 1.5)( 87.0) (- 3.3)( 253)( 1161)( 302) 192003 G 3.478 9096 0.690 284.1 113.0 + 7.1 2 14 192003 G 3.478 9095 0.589 262.0 106.7 - 7.5 174 1005 etc.