Does anybody know how to select 3-hourly time steps in a dataset on Google Earth Engine?
Here is what I have tried
// A function to compute CF_solar for every time step at which irradiation and temperature are available (3-hourly)
var CF_solar2 = function(image) {
return image.expression(
'(1-beta*(c1 + c2*T + c3*G - T_ref) + gamma*log10(G+1))*G/G_ref',
{
'beta': 0.0045,
'c1': -3.75,
'c2': 1.14,
'c3': 0.0175,
'T_ref': 25,
'gamma': 0.1,
'G_ref': 1000,
'T': image.select('Tair_f_inst').subtract(273.15),
'G': image.select('SWdown_f_tavg'),
}).rename("CF2").set('system:time_start', image.get('system:time_start'));
}