Reading the table:

  1. Find the degree of match, stated in number of markers matching vs. number compared
  2. Read down that column until finding the desired cumulative probability for the common ancestor.
  3. Look at the left-hand column (T.E.); this is the maximum number of generations for this degree of match
  4. The column just to the right (~ Generations) is the rough estimate number of generations between living descendants and the common ancestor.

Color coding

Beige cells mark ~50% probability; the odds are even that
the common ancestor lived within that time span or earlier.
Blue cells mark ~80% probability; the odds are 4 out of 5 that
the common ancestor lived within that time span.
Green cells mark ~90% probability; the odds are 9 out of 10 that
the common ancestor lived within that time span.

37-marker Table

T.E. ~
Gene-
rations
Number Matching Markers
37/3736/3735/3734/3733/3732/3731/37
Cumulative Probabilities
1111.5%1.3%0.1%0.0%0.0%0.0%0.0%
21-221.7%3.6%0.3%0.0%0.0%0.0%0.0%
31-230.7%6.6%0.9%0.1%0.0%0.0%0.0%
42-338.6%10.2%1.7%0.2%0.0%0.0%0.0%
52-345.7%14.2%2.9%0.4%0.0%0.0%0.0%
62-351.9%18.4%4.3%0.8%0.1%0.0%0.0%
73-457.5%22.8%6.1%1.2%0.2%0.0%0.0%
83-462.4%27.2%8.2%1.9%0.3%0.0%0.0%
9466.7%31.6%10.5%2.7%0.5%0.1%0.0%
10570.5%36.0%13.1%3.6%0.8%0.1%0.0%
11573.9%40.2%15.8%4.8%1.2%0.2%0.0%
12676.9%44.3%18.7%6.1%1.6%0.3%0.1%
13679.6%48.3%21.7%7.6%2.1%0.5%0.1%
14781.9%52.0%24.9%9.3%2.8%0.7%0.1%
15784.0%55.6%28.0%11.1%3.6%0.9%0.2%
16885.8%59.0%31.2%13.1%4.4%1.2%0.3%
17887.5%62.2%34.4%15.2%5.4%1.6%0.4%
18988.9%65.2%37.6%17.4%6.6%2.1%0.5%
19990.2%68.0%40.8%19.7%7.8%2.6%0.7%
201091.3%70.6%43.9%22.1%9.1%3.2%0.9%
211092.3%73.0%47.0%24.6%10.6%3.8%1.2%
221193.2%75.3%49.9%27.1%12.2%4.6%1.5%
231194.0%77.4%52.8%29.7%13.9%5.4%1.8%
241294.7%79.3%55.6%32.3%15.6%6.4%2.2%
251295.3%81.1%58.3%34.9%17.5%7.4%2.7%
261395.8%82.8%60.9%37.6%19.4%8.5%3.2%
271396.3%84.3%63.4%40.2%21.4%9.7%3.8%
281496.7%85.7%65.7%42.8%23.5%11.0%4.4%
291497.1%86.9%68.0%45.3%25.6%12.3%5.1%
301597.4%88.1%70.1%47.8%27.8%13.8%5.9%
311597.7%89.2%72.1%50.3%30.0%15.3%6.7%
3216>98%90.2%74.1%52.7%32.2%16.9%7.6%
331691.1%75.9%55.1%34.5%18.5%8.6%
341791.9%77.6%57.4%36.7%20.3%9.7%
351792.7%79.2%59.6%39.0%22.0%10.8%
361893.3%80.7%61.8%41.2%23.8%12.0%
371894.0%82.1%63.9%43.4%25.7%13.2%
381994.5%83.4%65.9%45.7%27.6%14.5%
391995.0%84.7%67.8%47.8%29.5%15.9%
402095.5%85.8%69.7% 50.0%31.4%17.3%
412095.9%86.9%71.4%52.1%33.4%18.8%
422196.3%87.9%73.1%54.2%35.4%20.3%
432196.7%88.9%74.8%56.2%37.4%21.9%
442297.0%89.7%76.3%58.2%39.4%23.5%
452297.3%90.5%77.8%60.2%41.4%25.1%
462397.6%91.3%79.2%62.1%43.4%26.8%
4723>98%92.0%80.5%63.9%45.3%28.5%
482492.6%81.7%65.7%47.3%30.2%
A typical genealogical time frame spans only the
most recent 24 generations, ~ 47 Transmission Events.
492493.2%82.9%67.4% 49.2%32.0%
502593.8%84.1%69.1%51.1%33.8%
512594.3%85.1%70.7%53.0%35.5%
522694.8%86.1%72.2%54.8%37.3%
532695.2%87.1%73.7%56.7%39.1%
542795.6%87.9%75.1%58.4%40.9%
552896.0%88.8%76.5%60.2%42.7%
562896.3%89.6%77.8%61.9%44.5%
572996.6%90.3%79.1%63.5%46.3%
582996.9%91.0% 80.2%65.2%48.0%
593097.2%91.6%81.4%66.7%49.8%
603097.4%92.2%82.5%68.3%51.5%
613197.6%92.8%83.5%69.7%53.2%
6231>98%93.3%84.5%71.2%54.9%
633293.8%85.4%72.5%56.5%
643294.3%86.3%73.9%58.2%
653394.7%87.2%75.2%59.7%
663395.1%88.0%76.4%61.3%
673395.5%88.7%77.6%62.8%
683495.8%89.4%78.8%64.3%
693496.1%90.1% 79.9%65.8%
703596.4%90.7%80.9%67.2%
713596.7%91.3%81.9%68.6%
723697.0%91.9%82.9%69.9%
733697.2%92.4%83.8%71.3%
743797.4%92.9%84.7%72.5%
753797.6%93.4%85.6%73.7%
7638>98%93.9%86.4%74.9%
773994.3%87.2%76.1%
783994.7%87.9%77.2%
794095.0%88.6%78.3%
804095.4%89.3%79.3%
814195.7% 89.9%80.3%
824196.0%90.5%81.3%
834296.3%91.0%82.2%
844296.5%91.6%83.1%
854396.8%92.1%83.9%
864397.0%92.6%84.8%
874497.2%93.0%85.5%
884497.4%93.5%86.3%
894597.6%93.9%87.0%
9045>98%94.3%87.7%
914694.6%88.3%
924695.0%89.0%
934695.3%89.6%
944795.6% 90.1%
954795.9%90.7%
964896.1%91.2%
974896.4%91.7%
984996.6%92.2%
994996.9%92.6%
1005097.1%93.0%
1015097.3%93.4%
1025197.4%93.8%
1035197.6%94.2%
10452>98%94.5%
1055394.8%
1065395.2%
1075495.4%
1085495.7%
1095596.0%
1105596.2%
1115696.5%
1125696.7%
1135796.9%
1145797.1%
1155897.3%
1165897.4%
11759 97.6%
11859       >98%
11960       
12060       

67-marker Table

T.E. Number Matching Markers, Cumulative Probabilities
67/6766/6765/6764/6763/6762/6761/67
119.8%3.9%0.4%0.0%0.0%0.0%0.0%
235.7%10.1%1.8%0.2%0.0%0.0%0.0%
348.5%17.6%4.2%0.7%0.1%0.0%0.0%
458.7%25.7%7.6%1.7%0.3%0.0%0.0%
566.9%33.7%12.0%3.3%0.7%0.1%0.0%
673.5%41.5%17.0%5.4%1.4%0.3%0.1%
778.7%48.8%22.5%8.1%2.4%0.6%0.1%
882.9%55.5%28.3%11.5%3.8%1.1%0.2%
986.3%61.5%34.2%15.2%5.6%1.7%0.5%
1089.0%66.9%40.0%19.4%7.8%2.6%0.8%
1191.2%71.7%45.7%23.9%10.4%3.8%1.2%
1293.0%75.8%51.2%28.6%13.4%5.3%1.8%
1394.4%79.5%56.3%33.4%16.7%7.1%2.6%
1495.5%82.6%61.1%38.3%20.3%9.3%3.7%
1596.4%85.3%65.6%43.1%24.2%11.7%4.9%
1697.1%87.6%69.6%47.8%28.2%14.4%6.4%
1797.7%89.6%73.3%52.3%32.3%17.3%8.1%
1891.2%76.6%56.6%36.5%20.5%10.1%
1992.7%79.6%60.7%40.7%23.8%12.3%
2093.9%82.2%64.6%44.8%27.3%14.7%
2194.9%84.6%68.2%48.9%31.0%17.4%
2295.7%86.7%71.5%52.8%34.7%20.2%
2396.4%88.5%74.6%56.6%38.4%23.2%
2497.0%90.1%77.4%60.3%42.1%26.3%
2597.5%91.5%80.0%63.7%45.8%29.5%
2692.7%82.3%67.0%49.4%32.8%
2793.8%84.4%70.1%53.0%36.2%
2894.7%86.2%73.0%56.4%39.6%
2995.5%87.9%75.6%59.7%43.0%
3096.1%89.4%78.1%62.9%46.3%
3196.7%90.8%80.3%65.9%49.6%
3297.2%91.9%82.4%68.8%52.9%
3397.6%93.0%84.3%71.5%56.1%
3493.9%87.6%74.0%59.1%
3594.7%89.0%76.4%62.1%
3695.4%90.3%78.6%64.9%
3796.0%91.4%80.7%67.6%
3896.6%92.4%82.5%70.1%
3997.1%93.3%84.3%72.6%
4097.5%94.1%85.9%74.9%
4197.8%94.9%87.3%77.0%
4295.5%88.7%79.0%
4396.1%89.9%80.9%
4496.6%91.0%82.6%
4597.0%92.0%84.3%
4697.4%92.9%85.7%
4797.4%93.7%87.1%
4897.7%94.4%88.4%
4995.0%89.5%
5095.6%90.6%
5196.1%91.6%
5296.6%92.4%
5397.0%93.2%
5497.4%94.0%
5597.7%94.6%
5695.2%
5795.7%
5896.2%
5996.6%
6097.0%
6197.4%
6297.7%