Criterion;Code "accurate to degree only (~110 km)";1 "15 minutes precision (~30 km)";2 "5 minutes precision (~10 km)";3 "2 minutes precision (~4 km)";4 "minute is exact (~ 2 km)";5 "1/10 decimal minute exact (~ 200 m)";6 "1/100 decimal minute exact (~ 20 m)";7 "1/1000 decimal minute exact (~ 2 m)";8