The Classic Results

The classic series marathon was completed on 21 April 2020 which was 722 days to watch 695 episodes. (About 0.96 eps per day which is pretty good going...)

https://www.timeanddate.com/date/timeduration.html

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Here's a table of this blog's average series ratings.

Series	Year	Avg. Rating
1	1963/64	58.2%
2	1964/65	64.8%
3	1965/66	54.1%
4	1966/67	67.2%
5	1967/68	69.2%
6	1968/69	60.3%
7	1970	77.4%
8	1971	72.3%
9	1972	72.1%
10	1973	72.2%
11	1974	72.6%
12	1974/75	76.0%
13	1975/76	83.5%
14	1976/77	84.8%
15	1977/78	57.4%
16	1978/79	72.5%
17	1979/80	48.8%
18	1980/81	75.3%
19	1982	66.9%
20	1983	66.7%
21	1984	60.0%
22	1985	39.3%
23	1986	46.0%
24	1987	36.5%
25	1988	49.4%
26	1989	69.2%

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What does this reveal?

The first series was actually kind of dodgy. 
In fact the 60's was kinda inconsistent overall. (If the archive were complete I think it might be better regarded.)

The best series is 14 but the best Doctor is 3. (4 would win if s15 and s17 were disregarded.)

Take out s3, s15 and s17 and there's 14 series of pretty good DW up to 1980.

After JNT's first series (18) the quality fell off a cliff. Except for series 26 (and maybe 19 and 20.) In the 80's DW sucked in 4 series following the 1985 'hiatus'. Series 21 is a kind of draw.

The worst series is 24. The worst Doctor is 6.

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Our Top 5 serials are
1    4C The Ark in Space              95.5%
2    6R The Caves of Androzani   95.1%
3    4G The Pyramids of Mars      94.3%
4    2Q The Web of Fear               93.6%
5    3Z  Planet of the Spiders        93.1%

Our Bottom 5 serials are:
154    6L Warriors of the Deep        22.8%
155    6Y Timelash                          14.6%
156    7K Silver Nemesis                 12.6%
157    6S The Twin Dilemma            6.8%
158    7F Delta and the Bannermen   4.4%


Our 10 percentile ratings distribute as follows:

Serial Rating	Category	Frequency
90% +		16
80% - 90%	classic!	30
70% - 80%	1st division	33
60% - 70%	2nd division	15
50% - 60%	3rd division	24
40% - 50%	trouble	17
30% - 40%	clanger!!	8
20% - 30%		12
10% - 20%		1
0 - 10%		2

The middle of the list is rank 79 The Tenth Planet 70.0% and rank 80 the Monster of Peladon 69.9%.