Since we first reported on Ameren Illinois’ gas rate-hike request in January, the utility has adjusted its rate hike. Here’s a quick review: Ameren’s Rate-hike Request: The company has adjusted the amount from about $134.4 million to $131.1 million. It’s not unusual for a rate-hike total to be adjusted as an 11-month case proceeds before the Illinois Commerce Commission (ICC). Impact on Customers: Ameren said originally its increase would raise average monthly residential customer...