def METHOD_NAME():
    gti = make_gti({"START": [5, 6, 1, 2] * u.s, "STOP": [8, 7, 3, 4] * u.s})
    gti = gti.union()
    assert_allclose(gti.met_start.value, [1, 5])
    assert_allclose(gti.met_stop.value, [4, 8])