my data looks like this:

         PM10       Ref   UZ     JZ         WT   RH   FT   WR
1   10.973195  4.338874 nein Winter   Dienstag   ja nein West
2    6.381684  2.250446 nein Sommer    Sonntag nein   ja  Süd
3   62.586512 66.304869   ja Sommer    Sonntag nein nein  Ost
4    5.590101  8.526152   ja Sommer Donnerstag nein nein Nord
5   30.925054 16.073091 nein Winter    Sonntag nein nein  Ost
6   10.750567  2.285075 nein Winter   Mittwoch nein nein  Süd
7   39.118316 17.128691   ja Sommer    Sonntag nein nein  Ost
8    9.327564  7.038572   ja Sommer     Montag nein nein Nord
9   52.271744 15.021977 nein Winter     Montag nein nein  Ost
10  27.388416 22.449102   ja Sommer     Montag nein nein  Ost
11   6.460829  4.486329   ja Winter    Samstag nein nein  Süd
12   5.937690 10.247768   ja Sommer    Sonntag nein nein Nord
13  14.004685  5.155790 nein Winter    Sonntag nein nein Nord
14  12.244333  7.063825   ja Sommer   Mittwoch nein   ja Nord
15  35.195541 12.148438 nein Winter     Montag nein nein  Ost
.
.
.
.
til 200
now I should illustrate the Central limit theorem with my data. I need to
make 80 times the arithmetic means of each of the 100 poisson distributet
random numbers with an expected value 7.
the hint says I need a metrices first which includes all of the 8000 values.
but I have no idea where the 8000 values are and how to make the matrices.
please help me

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