Description: Data on all home runs hit during the 2015 baseball season. Excludes "inside the park" home runs.
True Dist. (True Distance, a.k.a. Actual Distance) - If the home run flew uninterrupted all the way back to field level, the actual distance the ball traveled from home plate, in feet. If the ball's flight was interrupted before returning all the way down to field level (as is usually the case), the estimated distance the ball would have traveled if its flight had continued uninterrupted all the way down to field level.
Horiz. Angle - the initial direction of the ball as it left the bat in degrees, where 45 degrees is straight down the right field line, 90 degrees is straight over second base and 135 degrees is straight down the left field line.
Apex - the highest point reached by the ball in flight above field level, in feet.