Tell us about yourself!
Serial.print outputs to the serial port without any end of line characters. println does the same but adds a new line (the ln indicates this). Depending on your system that may be carriage return or with the new line character as well.
it would be interesting to get 4 or more of these spaced about 5km apart to see if they could then triangulate the results to identify the approximate location of the strike and the direction it is headed.
My Car Assistant (Embebbed Car Automation Computer)!