Two data outputs to be displayed on one 16x1 lcd display
You can use 

lcd.setCursor(x, y);


To set the cursor.

Than you can output text with

lcd.print("Text");


Make sure you add spaces in case there is already text written to overwrite older text.

You can also use

lcd.clear();


to clear the display, but this might result in flickering if you do it too often.

Another possibility is to create a 16 character string

char lcdText[16];


and write characters in this string and set it at once with:

lcd.setCursor(0, 0);
lcd.print(lcdText);