ERA5导出2020-07-09到2020-12-31气温数据空白

Question

var imageCollection = ee.ImageCollection("ECMWF/ERA5/DAILY");
var geometry = /* color: #98ff00 */ee.Geometry.Point([112.15, 31.09]);
var ic = imageCollection.filterDate('2020-07-09','2020-12-31')

var chart = ui.Chart.image.series({
imageCollection: ic.select('mean_2m_air_temperature', 'minimum_2m_air_temperature', 'maximum_2m_air_temperature', 'total_precipitation'),
region: geometry,
// reducer: ee.Reducer.max(),
scale: 12500
}).setOptions({title: 'C'});

// Display the chart in the console.
print(chart);