This is a website -

17 Apr pm   DK=15                         15___o___________________

20 Apr pm   DK=5                           13

21 Apr pm   DK=10                          11                 o

22 Apr pm  DK=-5                            9

23 Apr pm  DK=-10                          7

                                                       5             o

                                                       3

                                                       1

                                                      -1___17   20   21   22   23   24 APRIL

                                                      -3

                                                      -5                         o

                                                      -7

                                                      -9                                 o

                                                     -11

                                                     -13

                                                     -15 

                                                                                     17   20   21  22   23  24  APRIL