92 - The Total Number of Visible Stones at Stonehenge

There is some debate about how many visible stones there are at Stonehenge; what is the total number of stones you can see, not counting the buried and missing ones.
Using as my base the table in the Laser Scan report and adding the visible stones they missed here is my answer. 92.

Note, if a stone is broken and two separate bits of it are visible then it counts as two stones etc.

Stone 40g is not counted because all that is visible is a lead cap.

UPDATE - I missed stone 40 and so the total is now 92 not 91 as previously written.

I have checked this on the ground, but errors may remain, please comment if you spot any.

Stone No.	Volume (m³)	Estimated above ground weight (tonnes)	Additional visible fragments
1	5.45	13.08
2	8.03	19.27
3	5.55	13.32
4	6.66	15.98
5	5.64	13.53
6	5.54	13.29
7	5.97	14.32
8*	0.65	1.56
9a/b	0.25	0.29	1
10	7.07	16.96
11†	2.03	4.87
12‡	6.32	15.16
14‡	2.91	6.98
15*	1.31	3.14
16	9.8	23.52
19*	1.65	3.96
21	4.61	11.06
22	5.47	13.128
23	4.92	11.8
25*	2.95	7.08
26*	0.4	0.96
27	5.21	12.48
28	9.08	21.792
29	6.95	16.68
30	7.75	18.6
51	9.86	23.66
52	11.54	27.69
53	7.56	18.14
54	12.22	29.32
55a/b	6.6	15.84	1
56	9.61	23.06
57	11.64	27.93
58	10.02	24.04
59a/b/c*	9.1	21.84	2
60	9.01	21.62
91	1.16	2.78
93	0.56	1.34
95‡	1.75	4.2
96	12.47	29.92
101	1.88	4.51
102	2.7	6.48
105	1.59	3.81
107	2.1	5.04
120*	0.49	1.17
122	2.7	6.48
127*	0.6	1.44
130	2.6	6.24
152	4.89	11.73
154	7.29	17.49
156	3.7	8.88
158	6.9	16.56
160*	2.09	5.01	2
31	0.68	2.04
32‡	0.38	1.14
33	0.17	0.51
34	0.11	0.33
35a‡	0.0007	0.002
35b‡	0.003	0.01
36‡	0.09	0.27
37	0.27	0.81
38
39‡	0.16	0.48
40
41‡	0.24	0.72
42‡	0.1	0.3
43
44
45‡	0.14	0.42
46†	0.14	0.34
47	0.42	1.26
48‡†	0.066	0.16
49	0.37	1.11
61	0.32	0.96	1
62	0.41	1.23
63	0.4	1.2
64
65
67‡	0.53	1.59
68	0.71	2.13
69	0.72	2.16
70	0.41	1.23
72*	0.51	1.53
80 Altar Stone			1
150
Totals:
84		680.962	8
			Total Visible Stones 92

Click to enlarge - from http://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Stone_Plan.jpg/967px-Stone_Plan.jpg