Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The power spectrum of the seeing during solar observations   Measurements of the power spectrum of the atmospheric seeing in the line of
sight of the Sun, in the range 0.001-1 Hz, have been performed in Santa Maria
degli Angeli Lucernaria Dome, at IRSOL and in Huairou Station. This study is
aimed to understand the criticity of the meridian transits method for solar
diameter monitoring.

9
The categories of this paper are: nlin
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph