From your list, this is what I would expect:
Ave. Consumption 600 L/d per person * Total Population (persons) 538.0 * Min. Rate 0.4 /86400 = Min. Daily Demand (L/sec)
Ave. Consumption 600 L/d per person * Total Population (persons) 538.0 * Max. Day 2.75 /86400 = Max. Daily Demand (L/sec)
(Ave. Consumption 600 L/d per person * Total Population (persons) 538.0 * Max. Day 2.75 /86400) + (Fire Flow 75.8 L/s Max. Daily Demand (L/sec)) = Max. Day Demand + Fire Flow (L/sec)
Ave. Consumption 600 L/d per person * Total Population (persons) 538.0 *Peak Rate 4.13 /86400 = Max. Hourly Demand (L/sec)