OK, I am still learning. I started learning hard core in 2012, now I am also getting into Medical Astrology. What I am looking at right now is Synastry Aspect Numerical Totals and how does that compare to the way they do match making in India. Examples:

The reading I did yesterday for a couple that have been together since they were 13 and still have a healthy thriving relationship after 9 years. I don’t have their time and location of birth, this is just based on their birthdays.

Communication Index (Harmonious): +3022
Communication Index (Inharmonious): -1453
Compatibility Index (Har./Inhar.): 2.08
Total Communication Index: 4476

Here is my brother and his wife; their charts are a little off, but the Ascendants are good, Mercury is good. Sun, Mars and Moon are also good; the only thing off was Venus. They haven’t been together all that long, but they seem to be working.

Communication Index (Harmonious): +4784
Communication Index (Inharmonious): -570
Compatibility Index (Har./Inhar.): 8.4
Total Communication Index: 5353

My Ex2012 and I whom was one of my longest and maybe healthiest relationship ever… The only thing off in our charts was Mars. We had a great first 5 years, we almost lasted 7 years and the last year ended in disaster.

Communication Index (Harmonious): +1610
Communication Index (Inharmonious): -3109
Compatibility Index (Har./Inhar.): .52
Total Communication Index: 4719

Another Ex and I who also was astrologically compatible for the most part. Mars and Venus was off in our charts. Her and I are still friends, but not as close as we use to be. We lasted a long time, but not continuous; we dated off and on for almost a decade.

Communication Index (Harmonious): +3605
Communication Index (Inharmonious): -1908
Compatibility Index (Har./Inhar.): 1.89
Total Communication Index: 5513

My Ex2014 and I, we only lasted about a year. We wouldn’t have even lasted that long. We got together in July 2013, started having problems in Dec. 2013, broke up the first time in Jan. 2014; but got back together a week later and lasted another 9 months. We had our Mercury and Venus off. Mercury was the biggest issue I think.

Communication Index (Harmonious): +3695
Communication Index (Inharmonious): -1647
Compatibility Index (Har./Inhar.): 2.24
Total Communication Index: 5342

Here is my Jr. High School Sweetheart whom I just found on FaceBook, we lost touch 25 years ago, but it probably wouldn’t have worked out anyway. We have Mercury and our Moons off; don’t know what time she was born, so I don’t know her Ascendant or house placements. (This one isn’t accurate because I don’t know her time of birth).

Communication Index (Harmonious): +2601
Communication Index (Inharmonious): -860
Compatibility Index (Har./Inhar.): 3.03
Total Communication Index: 3461

Here is my brother and I, he was my arch nemesis thoughout our growing up. Though we get along better now that we don’t live together…

Communication Index (Harmonious): +4998
Communication Index (Inharmonious): -1016
Compatibility Index (Har./Inhar.): 4.92
Total Communication Index: 6013

What does it all mean??? I am still looking into it…

According to the astrologer that put my program together:

Some users have inquired regarding the normal range and significance of the different communication indexes. The range of the Harmonious Communication and Inharmonious Communication Indexes between two charts is from about 300 to 6000. This is for the default planet and aspect orb settings. Below 1500 is low; above 2500 is high. For compatibility, the Harmonious should be high and the Inharmonious low.
A Compatibility Index over 1.5 is high and over 2.5 is very high.

The positive or negative values that the planets and aspects are believed to have for personal relationships can be determined by examining the values that print out for each aspect when you choose Display Synastry during the Compare This Chart to Another menu selection on the Chart Information Screen. These numerical values have no absolute meaning; they are used to determine the sign and amount of an aspect’s contribution to the Harmonious and Inharmonious totals.
The Compatibility Index is the ratio of the Harmonious amount to the Inharmonious amount. The higher the Compatibility Index, the more the relationship is easy and free from friction.

You should look at the planetary aspects making up the indexes as you would not want, for example, discordant Saturn aspects that could warp or stunt growth (harmonious Saturn aspects promote stability and working out karmic problems).

A low Total Communication Index (less than 1800) gives so little communication that the two people are like ships passing in the night.
Regarding the total communication, we have become aware of the extent to which different people have different degrees of comfort with closeness or intimacy — this can affect the level of communication or closeness that they should have with their ideal partner. The speculation at this point is that an unaspected Moon or difficult aspects to the Moon or Venus could create a personality that finds emotional aspects from others to be unfamiliar and possibly uncomfortable.