Minimum Balance Requirement question.

Our Truth in Savings disclosure states:
If the balance falls below $1000 any day during the statement cycle, there is a maintenance fee of $2.00 per statement cycle.

Am I understanding correctly that HOW the balance is determined is not stated, or am I overthinking this?
"If the daily balance falls below ...."

Thanks in advance!

I have seen this written up in the past as not clearly disclosed.