Who is the most constant rider in Tour de France 1971?

Most constant rider

Rider with the smallest difference in best and worst result.

#	Rider	Difference	Best result	Worst result
1	Sanquer Jean-Jacques	72	21	93
2	Van Schil Victor	72	7	79
3	López Vicente	73	4	77
4	Van Vlierberghe Albert	76	1	77
5	De Koning Mathijs	77	21	98
6	Chappe Georges	77	48	125
7	Crepaldi Ottavio	77	4	81
8	Martelozzo Pierre	77	48	125
9	Guimard Cyrille	78	2	80
10	Zoetemelk Joop	78	2	80
11	Huysmans Jos	79	5	84
12	Aimar Lucien	80	3	83
13	Galdeano Francisco Javier	80	40	120
14	Karstens Gerben	81	1	82
15	Merckx Eddy	82	1	83
16	Raymond Christian	83	8	91
17	Manzaneque Jesús	83	16	99
18	Ravaleu Yves	83	34	117
19	Krekels Jan	84	1	85
20	Berland Roland	84	25	109
21	Martínez Mariano	85	8	93
22	Catieau José	85	5	90
23	Daunat Jean-Claude	85	39	124
24	Riotte Raymond	86	5	91
25	Ducreux Francis	88	22	110
26	Thévenet Bernard	88	1	89
27	Mascaró Gabriel	88	16	104
28	Juliá Francisco	88	39	127
29	Balagué Luis	90	27	117
30	Van Impe Lucien	90	2	92
31	Ghisellini Pierre	90	29	119
32	Rub Kurt	91	24	115
33	Dumont Jean	91	20	111
34	Coquery François	91	31	122
35	Wagtmans Rini	93	1	94
36	Danguillaume Jean-Pierre	93	1	94
37	Bruyère Joseph	93	13	106
38	Jimenez Nemesio	94	3	97
39	Delisle Raymond	94	10	104
40	Mortensen Leif	95	9	104
41	Spruyt Jos	95	3	98
42	Schutz Edy	95	12	107
43	Schleck Johny	96	10	106
44	López Rodríguez José Manuel	96	7	103
45	Grelin René	96	19	115
46	Van Neste Willy	98	2	100
47	Vasseur Alain	100	19	119
48	Mintjens Frans	102	3	105
49	Ballini Roberto	102	26	128
50	Davo Silvano	102	25	127