Armor penetration values

[CaptRio]

Let me try to explain:

In SPWAW we can easily id the penetrations values in the vehicle information screen as:

(distance in hexes)
1 (hex) - 60 (penetration) / 10 - 52 / 20 -43


And in winSPWW2:

ACC / KILL / PEN / HEAT / APCR / RANGE / WARHEAD
14 / 11:00 / 3:18 / 0 / 18 / 70:70 / 5

I'd like to know How to read those values, cause they dont say too much for me.