def mean(self, field=None):
        lis = self._getValues(field, isNumeric)
        return mean(lis)
save an alignment edge between self and targetIval
dataset/ETHPy150Open skyostil/tracy/src/generator/Cheetah/Tools/MondoReport.py/Summary.mean--crossover with--dataset/ETHPy150Open cjlee112/pygr/pygr/nlmsa_utils.py/BuildMSASlice.__iadd__