private int DataMin(ObjList<Narray<byte>> data)
{
int min = byte.MaxValue;
for (int io = 0; io < data.Length(); io++)
{
for (int n = 0; n < data[io].Length1d(); n++)
{
byte val = data[io].At1d(n);
if (val >= min) continue;
min = val;
}
}
return min;
}