def pad(fill_value = -1, data = @raw.clone)
      data = _pad data, 0, fill_value, 0
      _pad data, -1, fill_value, 6
    end
def pad(fill_value = -1, data = @raw.clone)
      data = _pad data, 0, fill_value, 0
      _pad data, -1, fill_value, 6
    end
Pad the dataset to full week increments