Google sheets charts grids questions

[Wanderarzt]

Dear all,

Kindly advise, why is it happening that the first two charts here have lost last few "X-asis" labels? In comparison with the other charts, where all the labels are present, and the same formulas and data ranges are used for X-axis...?

Also, is there any way to switch the vertical grid lines on in Google sheet charts?

Thanks a lot.

 

[Wanderarzt]

Oops. The charts are at the third Tab down there...X-axis does not have all the dates in first two charts. What could be the reason?