def azs (a):
    zscores = []
    for item in a:
        zscores.append(z(a,item))
    return N.array(zscores)
Return label for last non-NA/null value
dataset/ETHPy150Open radlab/sparrow/src/main/python/third_party/stats.py/azs--crossover with--dataset/ETHPy150Open pydata/pandas/pandas/core/series.py/Series.last_valid_index