arrays - 如何使用 swift 为每个月汇总仅包含以下聚合的 min、avg 和 Max temp

[ { "Longitude (x)":-65.89, "Latitude (y)":45.32, "Station Name":"SAINT JOHN A", "Climate ID":8104901, "Date/Time":"2018-01-01", "Year":2018, "Month":1, "Day":1, "Data Quality":"", "Max Temp (°C)":-14.5, "Max Temp Flag":"", "Min Temp (°C)":-22.3, "Min Temp Flag":"", "Mean Temp (°C)":-18.4, "Mean Temp Flag":"", "Heat Deg Days (°C)":36.4, "Heat Deg Days Flag":"", "Cool Deg Days (°C)":0, "Cool Deg Days Flag":"", "Total Rain (mm)":0, "Total Rain Flag":"T", "Total Snow (cm)":0, "Total Snow Flag":"", "Total Precip (mm)":0, "Total Precip Flag":"T", "Snow on Grnd (cm)":6, "Snow on Grnd Flag":"", "Dir of Max Gust (10s deg)":35, "Dir of Max Gust Flag":"", "Spd of Max Gust (km/h)":35, "Spd of Max Gust Flag":"" }, { "Longitude (x)":-65.89, "Latitude (y)":45.32, "Station Name":"SAINT JOHN A", "Climate ID":8104901, "Date/Time":"2018-01-02", "Year":2018, "Month":1, "Day":2, "Data Quality":"", "Max Temp (°C)":-12.4, "Max Temp Flag":"", "Min Temp (°C)":-23.9, "Min Temp Flag":"", "Mean Temp (°C)":-18.2, "Mean Temp Flag":"", "Heat Deg Days (°C)":36.2, "Heat Deg Days Flag":"", "Cool Deg Days (°C)":0, "Cool Deg Days Flag":"", "Total Rain (mm)":0, "Total Rain Flag":"", "Total Snow (cm)":0, "Total Snow Flag":"T", "Total Precip (mm)":0, "Total Precip Flag":"T", "Snow on Grnd (cm)":6, "Snow on Grnd Flag":"", "Dir of Max Gust (10s deg)":32, "Dir of Max Gust Flag":"", "Spd of Max Gust (km/h)":37, "Spd of Max Gust Flag":"" }, { "Longitude (x)":-65.89, "Latitude (y)":45.32, "Station Name":"SAINT JOHN A", "Climate ID":8104901, "Date/Time":"2018-01-03", "Year":2018, "Month":1, "Day":3, "Data Quality":"", "Max Temp (°C)":0.4, "Max Temp Flag":"", "Min Temp (°C)":-25.1, "Min Temp Flag":"", "Mean Temp (°C)":-12.4, "Mean Temp Flag":"", "Heat Deg Days (°C)":30.4, "Heat Deg Days Flag":"", "Cool Deg Days (°C)":0, "Cool Deg Days Flag":"", "Total Rain (mm)":0, "Total Rain Flag":"", "Total Snow (cm)":2, "Total Snow Flag":"", "Total Precip (mm)":2, "Total Precip Flag":"", "Snow on Grnd (cm)":6, "Snow on Grnd Flag":"", "Dir of Max Gust (10s deg)":17, "Dir of Max Gust Flag":"", "Spd of Max Gust (km/h)":44, "Spd of Max Gust Flag":"" }, { "Longitude (x)":-65.89, "Latitude (y)":45.32, "Station Name":"SAINT JOHN A", "Climate ID":8104901, "Date/Time":"2018-01-04", "Year":2018, "Month":1, "Day":4, "Data Quality":"", "Max Temp (°C)":7.7, "Max Temp Flag":"", "Min Temp (°C)":-0.6, "Min Temp Flag":"", "Mean Temp (°C)":3.6, "Mean Temp Flag":"", "Heat Deg Days (°C)":14.4, "Heat Deg Days Flag":"", "Cool Deg Days (°C)":0, "Cool Deg Days Flag":"", "Total Rain (mm)":18.8, "Total Rain Flag":"", "Total Snow (cm)":4, "Total Snow Flag":"", "Total Precip (mm)":22.8, "Total Precip Flag":"", "Snow on Grnd (cm)":8, "Snow on Grnd Flag":"", "Dir of Max Gust (10s deg)":18, "Dir of Max Gust Flag":"", "Spd of Max Gust (km/h)":87, "Spd of Max Gust Flag":"" } ]