The phrase "appears to exist at" is correct and usable in written English.
It can be used when discussing the presence or location of something that is not definitively confirmed but seems to be present.
Example: "The data analysis suggests that the anomaly appears to exist at the intersection of the two variables."
Alternatives: "seems to be located at" or "is thought to be present at".
A further threshold appears to exist at approximately 50 ha for the dominance of forest interior species.
Genetic susceptibility appears to exist at three levels: within adipose tissue itself, in insulin signaling pathways, and in regulation of individual risk factors.
For anticonvulsant assays, the optimal lipophilicity for the penetration through the BBB appears to exist at about log P = 2 [38] 38].
As Fazey and Fazey (2001) also agree, while the potential for autonomy appears to exist at the individual level, students need to be given permission to demonstrate their capacities and develop them.
As Fazey and Fazey (2001) explain, while the potential for autonomy appears to exist at the individual level, students need to be given permission to demonstrate their capacities and develop them (p. 358); and as Chan, Spratt and Humphreys (2002) exert, students' attitudes may not always be apparent in actual autonomous behavior.
More positive selection appears to exist at branches deep within the tree than along more recent branches.
The protein appears to exist as a dimer at nanomolar concentrations but can form larger assemblies at micromolar concentrations.
But English Heritage has turned down the request to place a plaque on his former home, saying that Zweig's "profile has never been as high in Britain as elsewhere", and "it was felt that a critical consensus does not appear to exist at the moment regarding Zweig's reputation as a writer and that, as a consequence, it was not possible to be certain of his lasting contribution".
It would be attainable only through a more extensive bank of data of high reliability covering a wider spectral range, and this does not appear to exist at present.
