So Delta G is equal to negative 4342 joules per mole. And so we see that once we open up the channel, because there exists this electrical gradient. So we have a high electrical potential on this side, a low electrical potential on the other side. There will be a movement, so a spontaneous movement from the outside to the inside of that cell. And that's exactly what the negative Delta G actually tells us. So if the Delta G is positive, energy must be inputted to actually move the chart species across that particular cell membrane.