Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Misure quantitative del seeing atmosferico   A simple technique of measurement of seeing in daytime and nighttime, based
upon drift-scan observations, is presented, along with observational examples.
This experience can be repeated easily in classroom contexts.

22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom