Trying to map the correct human lightness names to hsl-lightness values

In order to set the correct lightness names, colour is set to 120 (green), and saturation to 100%. So hsl(120,100%,15%) might result in something like A rather saturated, very dark green. I guess this is a good setting for analyzing lightness, if you know a better setting, let me know.

In this next table you'll see the value of the lightness, and the human name behind it. If you know a better layout for such a table, please let me know.

We're looking for the correct names here and for the correct boundaries: does almost black really end at 9? If you know of a scientific approach, please let me know.

1 = almost black
2 = almost black
3 = almost black
4 = almost black
5 = almost black
6 = almost black
7 = almost black
8 = almost black
9 = almost black
10 = very dark
11 = very dark
12 = very dark
13 = very dark
14 = very dark
15 = very dark
16 = very dark
17 = very dark
18 = very dark
19 = very dark
20 = very dark
21 = very dark
22 = very dark
23 = dark
24 = dark
25 = dark
26 = dark
27 = dark
28 = dark
29 = dark
30 = dark
31 = normal?
32 = normal?
33 = normal?
34 = normal?
35 = normal?
36 = normal?
37 = normal?
38 = normal?
39 = normal?
40 = normal?
41 = normal?
42 = normal?
43 = normal?
44 = normal?
45 = normal?
46 = normal?
47 = normal?
48 = normal?
49 = normal?
50 = normal?
51 = normal?
52 = normal?
53 = normal?
54 = normal?
55 = normal?
56 = normal?
57 = normal?
58 = normal?
59 = normal?
60 = normal?
61 = light
62 = light
63 = light
64 = light
65 = light
66 = light
67 = light
68 = light
69 = light
70 = light
71 = light
72 = light
73 = light
74 = light
75 = light
76 = light
77 = light
78 = light
79 = light
80 = light
81 = very light
82 = very light
83 = very light
84 = very light
85 = very light
86 = very light
87 = very light
88 = very light
89 = very light
90 = very light
91 = very light
92 = very light
93 = very light
94 = very light
95 = almost white,
96 = almost white,
97 = almost white,
98 = almost white,
99 = almost white,
100 = almost white,