pub async fn prepare(ctx) {
    ctx.prepare(READ, `SELECT * FROM ${KEYSPACE}.${TABLE} WHERE lc = ? LIMIT ${READ_SIZE}`).await?;
}

pub async fn run(ctx, i) {
    let lc = normal(i, 2.2, 2.5).clamp(0.0, 5.0).to_i32();
    ctx.execute_prepared(READ, [lc]).await?;
}