Display mode and first TTL issue

for example:

mtr -t -f25 gnail.com

Host                                                            Loss%   Snt   Last   Avg  Best  Wrst StDev
25. 61.49.44.122                                                 11.8%    18  446.5 448.6 446.4 463.4   4.3
26. ???
27. 123.196.119.29                                               11.8%    17  440.2 440.4 439.9 441.0   0.0
28. 219.234.92.18                                                11.8%    17  446.6 453.3 445.9 508.1  18.8
29. 203.158.16.2                                                 12.5%    17  441.9 441.3 441.0 442.0   0.0

after pressing `d' key:
                             Last  78 pings
 1. ???
 2. ???
 3. ???
 4. ???
 5. ???
 6. ???
 7. ???
 8. ???
 9. ???
10. ???
11. ???
12. ???
13. ???
14. ???
15. ???
16. ???
17. ???
18. ???
19. ???
20. ???
21. ???
22. ???
23. ???
24. ???
25. 61.49.44.122                                                         ................................??
26. ???                                                                  ??????????????????????????????????
27. 123.196.119.29                                                       ................................??
28. 219.234.92.18                                                        ....>..................>.......???
29. 203.158.16.2                                                         ...............................???
Scale:  .:441 ms  1:444 ms  2:451 ms  3:459 ms  a:471 ms  b:484 ms  c:500 ms