Not fully sure what it says, except 'Satsuki association' and 'cultivar' and then lists each cultivar with a percentage. Probably a percentage of each variety exhibited at events in a certain category. This certainly doesn't involve meika/flower towers, as Osakazuki is no1. in most. I could translate the variety kanji for you guys.
That would most interesting
@Glaucus.
Here's an adjacent thought about bonsai and azaleas....
Over the years there are cultivars of satsuki azalea that have been recommended for bonsai by authors, Naka et al to Watanabe. Roberta Walters, a teaching student of Gondo's, mentions that of all the satsuki cultivars available, perhaps 50 or less are commonly used for bonsai. Perhaps this is because the horticultural aspects and bonsai aspects of these cultivars are well known/understood and these specific plants are actually available and desirable.
For example these cultivars are listed as being suitable and popular over a 25 year span:
Chiyo no Hikari, Goyten, Kaho, Kinsai, Kogetsu, Korin,
Kozan,
Nikko,
Nyohozen, Ozakazuki, Yama no Hikari and Yama no Hikari
However, once one identifies these cultivars sports... in this example let's use Kozan..... there exists a larger subset of their flower sports
(and perhaps leaf sports, but the actual data is sparse to support these.) that are extremely likely to share similar horticultural and bonsai aspects.
For example Kozan... and these may not be complete lists.
Kozan family (sports: Akakozan, Hikari no Hana, Kozan no Hikari, Kozan no Homare, Kozan no Hoshi, Kozan no Mai, Kozan no Tsuki,
Nikko,
Nyohozen, Shirokozan)
... and to extend this to one large family of one of Kozan's sports....
sub family Nikko family (sport of Kozan) (sports: Akane, Aoi, Goko, Hakko, Hikari no Tsukasa, Hosei, Kenko, Koippin, Nikko no Hana, Nikko no Hoshi, Nikko no Takara, Sachi no Hana, Tensho, Tensho no Hikari, Tosho no Hikari Subaru)
As one can see, the Kozan family has at least three cultivars frequently used for bonsai. Thus there are likely many other durable cultivars in this lineage that are suitable for bonsai.
There are many possible reasons these aren't used. For example. Desirablity of these cultivars is so high that other sports are overlooked, Sheer availability of the popular cultivars, Nonavailability of the other sports, Sports flowers don't look pleasing, Popularity of the flowers of these sports doesn't exist. Popularity of other non Kozan cultivars.... and a very probable one..... it takes a long time from identification of a sport to actual bonsai and investment in money and substantial risk to make a bonsai marketable in a traditional country.
Whew! ... and duh moment.... This means that there are hundreds of other satsuki and to take a leap other types of azaleas available that would make really good azalea bonsai... but may not have been explored.
Cheers
DSD sends
( So sorry! I must actually have too much time on my hands now that I'm grounded for a couple weeks!!!)