The phrase "a reasonable indicator of" is correct and usable in written English.
It can be used when discussing something that serves as a sign or measure of another thing's quality, status, or likelihood.
Example: "The increase in sales is a reasonable indicator of the product's growing popularity in the market."
Alternatives: "a good sign of" or "a valid measure of".
Still, he added, "it does seem like a reasonable indicator of Main Street lending".
Two very different teams will contest the second match but this was a lively opening act and a reasonable indicator of what may be to come.
So for a voter, the strength of the national currency is a reasonable indicator of the quality of a government's economic management.
The theoretical and experimental results show good agreement, suggesting that the simulation is a reasonable indicator of what may be expected in practice.
Finebaum's reply to Bobby from Homewood — "I'm not going to respond, but you can make a complete ass out of yourself and go right ahead" — is a reasonable indicator of the way he runs his show.
If we want to increase society's productive efficiency, people's willingness to pay with money is a reasonable indicator of how much they will gain if they have access to the hearing.
It was found that the normalized base modulus (ratio between back-calculated and initial modulus) and the semi-rigid base cracking condition had good relationship on log-log scales, therefore the normalized base modulus was considered to be a reasonable indicator for the evaluation of semi-rigid base damage (cracking) condition.
The frost jacking ratio ηj (ultimate jacking displacement divided by freezing depth) was a reasonable indicator in terms of anti-frost jacking ability.
We contend that the occurrence of so many tetrapod metzincin homologues in paralogous genomic loci is a reasonable indicator that most of these duplications resulted from the genome events characterising early vertebrate evolution.
In this study we observed significant associations between SHS exposure and respiratory symptoms even with adjustment for job title, a fairly reasonable indicator of occupational exposure to air pollutants in this industry [ 25].
