Same Finger Count indicates how many times the same finger was used consecutively.
With QWERTY keyboard when typing the word "yumminess", you will have to use your right-index finger 4 times consecutively. We want this number to be low, as that means when one finger presses a key the other can get ready to press the next key.
Same Hand Count indicates how many times the same hand was used consecutively.
With QWERTY keyboard to type the word "starwars" your right hand will sit idle while your left hand types the entire word.
Distance Travelled shows how far the fingers had to travel from their resting positions in the home row.
For the QWERTY keyboard, the "F" key is considered to be at distance 0, because the left-index finger rests on it. "G" key is at distance 1 and "T" is at distance 2.