TFirst(a;b) scans the results a to b and returns the first time entered (Lowest ID).
e.g. TFirst(1;10) - returns the time from the result with the lowest ID from Results with ID from 1 to 10
The function TFirst(a;b;c;d) retrieves all times in the results with IDs a to b and sorts them from smallest to largest.
It then only considers the cth best to dth best result and returns the first time of these (=lowest ID).
e.g. TFirst(1;10;1;3) - Returns the result with the lowest ID from the smallest 3 times from Result IDs 1-10
TFirst(a;b;c;d;1) corresponds to TFirst(a;b;c;d), but sorts the times in descending order.
TFirst(a;b;0;0;0;c) scans the results a to b and returns the cth time entered.
e.g. TFirst(1;10;0;0;0;3) - Returns the result of the 3rd result (according to Result IDs) which has been entered from Result IDs 1-10