This is a set of 287000 geographic points together with their coordinates in the transverse Mercator projection. The WGS84 ellipsoid (equatorial radius a = 6378137 m, flattening f = 1/298.257223563) is used, with central meridian 0°, central scale factor 0.9996 (the UTM value), false easting = false northing = 0 m.
Each line of the test set gives 6 space delimited numbers
latitude, φ (degrees, exact)
longitude, λ (degrees, exact — see below)
easting (meters, accurate to 0.1 pm)
northing (meters, accurate to 0.1 pm)
meridian convergence (degrees, accurate to 10−18 deg)
scale (accurate to 10−20)
These are computed using high-precision calculations using the exact formulas for the projection, see Lee (1976). The latitude and longitude are all multiples of 10−12 deg and should be regarded as exact, except that λ = 82.63627282416406551° should be interpreted as exactly (1 − e) 90°, where e is the eccentricity given by e2 = f (2 − f ).
The entries for φ < 0° and λ ∈ [(1 − e) 90°, 90°] use the “extended” domain for the transverse Mercator projection explained in Sec. 5 of Karney (2011). The first 258000 entries have φ ≥ 0° and are suitable for testing implementations following the standard convention.