Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Rider | Mon 30 May | Tues 31 May | Wed 1 June | Thurs 2 June | Fri 3 June |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Michael Dunlop 600cc Yamaha | —— No Time | 18' 02.60 125.462mph | —— No Time | Cancelled No Time | 18' 04.32 125.266mph |
| 2.0 | Cameron Donald 600cc Honda | —— No Time | 17' 40.42 128.089mph | 18' 05.67 125.110mph | Cancelled No Time | —— No Time |
| 3.0 | Bruce Anstey 599cc Honda | —— No Time | 18' 55.91 124.236mph | 18' 43.04 120.947mph | Cancelled No Time | —— No Time |
| 4.0 | William Dunlop 600cc Honda | —— No Time | —— No Time | 18' 15.75 123.959mph | Cancelled No Time | —— No Time |
| 5.0 | John McGuinness 599cc Honda | —— No Time | 18' 54.35 119.741mph | 18' 47.02 120.519mph | Cancelled No Time | 18' 19.68 123.516mph |
| 6.0 | Guy Martin 600cc Suzuki | —— No Time | —— No Time | 18' 22.66 123.182mph | Cancelled No Time | —— No Time |
| 7.0 | Gary Johnson 600cc Honda | —— No Time | —— No Time | —— No Time | Cancelled No Time | 18' 23.51 123.087mph |
| 8.0 | Keith Amor 600cc Honda | —— No Time | —— No Time | —— No Time | Cancelled No Time | 18' 27.35 122.660mph |
| 9.0 | Dan Kneen 600cc Yamaha | —— No Time | 19' 02.34 118.903mph | 18' 41.42 121.121mph | Cancelled No Time | —— No Time |
Question:
What is the number of riders that had a Tues 31 May time of 18' 55.91 124.236mph?
Answer:
1.0