Author needs to decide which end of the stratum stack they want as the top. > This design from 2010 had at the top stratum 1 sources at Australia's National Me

Author needs to decide which end of the stratum stack they want as the top. > This design from 2010 had at the top stratum 1 sources at Australia's National Measurement Institute (NMI) > Among otherwise comparable candidates, the lower stratum carries more weight.