def _findmin(array):
    minn = delta
    for i in array:
        if (np.min(i) < minn):
            minn = np.min(i)
    return minn
def _findmin(array):
    minn = delta
    for i in array:
        if (np.min(i) < minn):
            minn = np.min(i)
    return minn