-o3 shows some differences on the original datasets
-101.234497 83.462143 -12.734940
-106.304001 96.837433 -53.764290
-109.385696 83.042526 -83.032463
-118.794800 83.359047 -70.939301
-100.282799 95.857903 -96.034943
-101.850601 96.551468 -22.619061
-109.516502 96.748428 -38.367592
-110.612099 97.666199 -63.716400
-106.313797 108.098396 -68.992393
-89.980591 98.028320 -74.117943
-111.827202 94.243118 -43.823158
-114.663300 77.201622 -72.609596
-106.228203 84.438667 -47.734192
-102.995102 61.769970 -108.736000
