What does Nehemiah 12:38 mean?

And the other company of them that gave thanks went to meet them, and I after them, with the half of the people, upon the wall, above the tower of the furnaces, even unto the broad wall,

And the other company of them that gave thanks went over against them, and I after them, and the half of the people upon the wall, from beyond the tower of the furnaces even unto the broad wall;

And the other company of them that gave thanks went to meet them, and I after them, with the half of the people, upon the wall, above the tower of the furnaces, even unto the broad wall,

And the other band of those who gave praise went to the left, and I went after them with half the people, on the wall, over the tower of the ovens, as far as the wide wall;

And the second thanksgiving company that is going over-against, and I after it, and half of the people on the wall from beyond the tower of the furnaces and unto the broad wall,

And above the gate of Ephraim, and above the old gate, and above the fish gate and the tower of Hananeel, and the tower of Emath, and even to the flock gate: and they stood still in the watch gate.

And the second choir went in the opposite direction upon the wall, and I after them, and the half of the people, from beyond the tower of the furnaces even to the broad wall;