Ошибка - в позиции 35 нет строки.

error- There is no row at position 35.

try
      {
          DataTable dt = new DataTable();
          //string str = "select round(Avg(Score),2) as Score from oeunitscore";
          string str = @"select om.unitgroup, round(Avg(Score),2) as Score, date(timestamp) as TimeStamp  from oeunitscore os, oeunitmaster om
                              where os.unitcode=om.unitcode and date(timestamp) BETWEEN SYSDATE() - interval 11 day AND SYSDATE()
                              group by  unitgroup, date(timestamp)
                              order by date(timestamp) , unitgroup asc";
          if (con.State == ConnectionState.Closed)
          {
              con.Open();
          }
          MySqlDataAdapter da = new MySqlDataAdapter(str, con);
          da.Fill(dt);
          if (dt.Rows.Count > 0)
          {
              date1 = Convert.ToDateTime(dt.Rows[0]["TimeStamp"]).ToString("dd-MM-yy");
              date2 = Convert.ToDateTime(dt.Rows[7]["TimeStamp"]).ToString("dd-MM-yy");
              date3 = Convert.ToDateTime(dt.Rows[14]["TimeStamp"]).ToString("dd-MM-yy");
              date4 = Convert.ToDateTime(dt.Rows[21]["TimeStamp"]).ToString("dd-MM-yy");
              date5 = Convert.ToDateTime(dt.Rows[28]["TimeStamp"]).ToString("dd-MM-yy");
              date6 = Convert.ToDateTime(dt.Rows[35]["TimeStamp"]).ToString("dd-MM-yy");
              date7 = Convert.ToDateTime(dt.Rows[42]["TimeStamp"]).ToString("dd-MM-yy");

              dh1 = Convert.ToSingle(dt.Rows[0]["Score"].ToString());
              di1 = Convert.ToSingle(dt.Rows[1]["Score"].ToString());
              fr1 = Convert.ToSingle(dt.Rows[2]["Score"].ToString());
              gf1 = Convert.ToSingle(dt.Rows[3]["Score"].ToString());
              lr1 = Convert.ToSingle(dt.Rows[4]["Score"].ToString());
              of1 = Convert.ToSingle(dt.Rows[5]["Score"].ToString());
              ut1 = Convert.ToSingle(dt.Rows[6]["Score"].ToString());

              dh2 = Convert.ToSingle(dt.Rows[7]["Score"].ToString());
              di2 = Convert.ToSingle(dt.Rows[8]["Score"].ToString());
              fr2 = Convert.ToSingle(dt.Rows[9]["Score"].ToString());
              gf2 = Convert.ToSingle(dt.Rows[10]["Score"].ToString());
              lr2 = Convert.ToSingle(dt.Rows[11]["Score"].ToString());
              of2 = Convert.ToSingle(dt.Rows[12]["Score"].ToString());
              ut2 = Convert.ToSingle(dt.Rows[13]["Score"].ToString());

              dh3 = Convert.ToSingle(dt.Rows[14]["Score"].ToString());
              di3 = Convert.ToSingle(dt.Rows[15]["Score"].ToString());
              fr3 = Convert.ToSingle(dt.Rows[16]["Score"].ToString());
              gf3 = Convert.ToSingle(dt.Rows[17]["Score"].ToString());
              lr3 = Convert.ToSingle(dt.Rows[18]["Score"].ToString());
              of3 = Convert.ToSingle(dt.Rows[19]["Score"].ToString());
              ut3 = Convert.ToSingle(dt.Rows[20]["Score"].ToString());

              dh4 = Convert.ToSingle(dt.Rows[21]["Score"].ToString());
              di4 = Convert.ToSingle(dt.Rows[22]["Score"].ToString());
              fr4 = Convert.ToSingle(dt.Rows[23]["Score"].ToString());
              gf4 = Convert.ToSingle(dt.Rows[24]["Score"].ToString());
              lr4 = Convert.ToSingle(dt.Rows[25]["Score"].ToString());
              of4 = Convert.ToSingle(dt.Rows[26]["Score"].ToString());
              ut4 = Convert.ToSingle(dt.Rows[27]["Score"].ToString());

              dh5 = Convert.ToSingle(dt.Rows[28]["Score"].ToString());
              di5 = Convert.ToSingle(dt.Rows[29]["Score"].ToString());
              fr5 = Convert.ToSingle(dt.Rows[30]["Score"].ToString());
              gf5 = Convert.ToSingle(dt.Rows[31]["Score"].ToString());
              lr5 = Convert.ToSingle(dt.Rows[32]["Score"].ToString());
              of5 = Convert.ToSingle(dt.Rows[33]["Score"].ToString());
              ut5 = Convert.ToSingle(dt.Rows[34]["Score"].ToString());

              dh6 = Convert.ToSingle(dt.Rows[35]["Score"].ToString());
              di6 = Convert.ToSingle(dt.Rows[36]["Score"].ToString());
              fr6 = Convert.ToSingle(dt.Rows[37]["Score"].ToString());
              gf6 = Convert.ToSingle(dt.Rows[38]["Score"].ToString());
              lr6 = Convert.ToSingle(dt.Rows[39]["Score"].ToString());
              of6 = Convert.ToSingle(dt.Rows[40]["Score"].ToString());