Exporting array in Google Earth Engine?

Question

I got a list of values and I could print them to the Console. It looks like this:

{
 "chlor_a": 0.12718113166405862
 },
 {
 "chlor_a": 0.37072379355468843
 },

How can I export it to my Drive account in csv format?

This is the code so far:

var bo=ee.FeatureCollection('users/broadsky2008/Border');
var chla = ee.ImageCollection("NASA/OCEANDATA/MODIS-Aqua/L3SMI")
.filterDate('2012-7-04', '2018-1-25')
.select('chlor_a');
var reduceR = function(image) {
 return image.set('number',image.reduceRegion({
 reducer: ee.Reducer.mean(),
 geometry: bo.geometry(),
 }));
};
// Map the function over the collection and display the result.
var mChla=chla.map(reduceR);
// Get a list of the numbers.
var numberList = mChla.aggregate_array('number');
print(numberList);

Answer 1

The argument(s) to set() should be either a key, value pair or a dictionary. Here is your (corrected) example, assuming you've got a geometry called geometry defined somewhere:

var chla = ee.ImageCollection("NASA/OCEANDATA/MODIS-Aqua/L3SMI")
 .filterDate('2018-1-04', '2018-1-25')
 .select('chlor_a');
var reduceR = function(image) {
 return image.set(image.reduceRegion({
 reducer: ee.Reducer.first(),
 geometry: geometry,
 }));
};
var mChla=chla.map(reduceR);
Export.table.toDrive({
 collection: ee.FeatureCollection(mChla), 
 description: 'foo', 
 fileNamePrefix: 'foo', 
 fileFormat: 'CSV', 
 selectors: ['chlor_a']
});