The phrase "and the first indicator" is correct and usable in written English.
It can be used when referring to an initial sign or signal in a sequence or list of indicators.
Example: "In our analysis, we will focus on the key metrics, and the first indicator we will examine is the sales growth rate."
Alternatives: "and the initial indicator" or "as the primary indicator".
Considering the spatiotemporal distribution of these indicators, the progression of the disease was probably from the east (province of Liège) to the west as far as the province of Hainaut, and the first indicator changes were observed during the spring of 2006.
ATRA treatment increases the expression of Pax2, one of the first genes expressed during kidney embryogenesis in the intermediate mesoderm and the first indicator of renal lineage determination.
By using NRK cells we remained in a renal cell system with the cDNAs taken from the kidney and with the first indicator cell line (HEK293T) also from this organ.
The lack of data on mercury capture (or release) from local, State and federal governments is the first indicator of widespread ignorance.
From the results obtained and in relation to the first indicator, it can be observed that the percentage of students who passed at all the exam calls increased significantly in the first year of implementation (Fig. 5 and statistical test).
"I think that that battle is happening right now and 2018 will be the first indicator about whether the party is going to continue to nominate establishment Republicans or whether we've taken to a more populist type of Republican who can actually communicate with the working class".
The first indicator, and perhaps the most crucial, is her long history of diving experience.
Do not be tempted to stop at the first indicator and start trading.
Smiling is the first indicator (and the most obvious) that you are a person they probably want to be around.
Apple's iPod and its click wheel was actually the first indicator that the finger was another limb and a radically different UI than the mouse.
The red game case – a bold and loud statement of fun – is the first indicator that there's something special under the hood in this one.
