\begin{table}%t1
%\centering
\par
\caption{Sample of galaxies in the different observing runs. Type:
morphological type extracted from the NASA/IPAC Extragalactic Database; $M_{B}$:~absolute magnitude in the $B$-band, obtained
from the Lyon-Meudon Extragalactic Database; Env.:~when
the galaxy is a member of a well-known cluster, the cluster name is indicated;
the label Pair indicates that the galaxy is a member of a pair of galaxies;
when the galaxies do not belong to a cluster, group, or pair of galaxies, it is
labeled as field galaxy; Run:~observation run in which each galaxy was
observed; $t_{\rm exp}$:~exposure time (seconds); PA:~position angle of the
major axis of the galaxy measured from north to east (degrees);
SA:~orientation of the slit (degrees); Flag:~environment assigned to each
galaxy (L: low-density  environment: H: high-density environment); 
Code: symbols used in Figure; Ref:~reference used to assigned the environment Flag to each 
galaxy (Gc93: Garc\'{\i}a \cite{Garcia93}; VCC85: Binggeli et~al.  \cite{Binggeli85}; GMP: 
Godwin et~al.  \cite{Godwin83}; CGCG: Zwicky et~al. 1974). \ref{figure.sigma}.   
\label{tab-sample}}
\small
\begin{tabular}{@{}llllclcrrrrcr@{}}
\hline\hline
  Name      
&\multicolumn{1}{c}{RA (J2000)} 
&\multicolumn{1}{c}{Dec (J2000)}       
&\multicolumn{1}{c}{Type}    
&\multicolumn{1}{c}{$M_{\rm B}$} 
&\multicolumn{1}{c}{Env.}      
&\multicolumn{1}{c}{Run}
&\multicolumn{1}{c}{$t_{\rm exp}$}
&\multicolumn{1}{c}{PA} 
&\multicolumn{1}{c}{SA} 
&\multicolumn{1}{c}{Flag}
&\multicolumn{1}{c}{Code}
&\multicolumn{1}{c}{Ref.}\\
\hline 
 NGC 221    & 00 42 41.87 & +40 51 57.2 & cE2      &$ -17.58 $ & LGG 11        & 1 &    1204  &   170
 &  170.0&L & $\triangle$ & Gc93\\
            &             &             &          &           &              & 3 &    1200  &   170  &   0.0 &  &       \\
 NGC 315    & 00 57 48.88 & +30 21 08.8 &  E+      &$ -22.37 $ & LGG 18        & 1 &    1800  &
 40.0 &   0.0 &L & $\bigcirc$ & Gc93\\
            &             &             &          &           &              & 3 &    2400  &   40.0 &  45.0 &  &        \\
 NGC 507    & 01 23 40.00 & +33 15 21.9 &  SA(r)   &$ -22.15 $ & LGG 26        & 1 &    1585  &
 67.0 &   0.0 &L & $\Box$& Gc93\\
 NGC 584    & 01 31 20.72 &$-$06 52 06.1 &  E4     &$ -20.63 $ & NGC 584 group& 1 &    1800  &  120.0
 &   0.0 &L & $\bigcirc$& Gc93\\
 NGC 636    & 01 39 06.52 &$-$07 30 45.6 &  E3     &$ -19.65 $ & LGG 27        & 1 &    1800  &
 140.0 &   0.0 &L & $\bigcirc$& Gc93\\
 NGC 821    & 02 08 21.04 & +10 59 41.1 &  E6      &$ -20.57 $ & Field        & 1 &    1200  &   25.0
 &   0.0 &L & $\bigcirc$&\\
 NGC 1453   & 03 46 27.22 &$-$03 58 08.9 &  E2--3  &$ -21.52 $ & LGG 103        & 1 &    1800  &
 8.0 &   0.0 &L & $\bigcirc$& Gc93\\
 NGC 1600   & 04 31 39.89 &$-$05 05 10.1 &  E3     &$ -22.31 $ & Field        & 1 &    1800  &  170.0
 &   0.0 &L & $\bigcirc$& \\
            &             &             &          &           &              & 2 &    1800  &  170.0
            & 195.0 &  & &\\
 NGC 1700   & 04 56 56.30 &$-$04 51 52.0 &  E4     &$ -21.80 $ & LGG 123        & 1 &    3000  &
 65.0 &   0.0 &L & $\bigcirc$&Gc93\\
 NGC 2300   & 07 32 21.82 & +85 42 32.2 &  E--S0   &$ -20.85 $ & Abell 569    & 1 &    1500  &   78.0
 &   0.0 &L & $\Box$&Gc93\\
 NGC 2329   & 07 09 08.08 & +48 36 53.3 &  S0$-$   &$-21.73  $ & Abell 569    & 2 &    1800  &
 175.0&  175.0&L & $\square$&Gc93\\
 NGC 2693   & 08 56 59.28 & +51 20 49.5 &  E3      &$ -21.67 $ &  LGG 168        & 1 &    3200  &
 160.0 &   0.0 &L & $\bigcirc$&Gc93\\
 NGC 2694   & 08 56 59.28 & +51 19 55.1 &  E1      &$ -19.15 $ &  LGG 168        & 1 &    3200  &
 &   0.0 &L & $\bigcirc$&Gc93\\
 NGC 2778   & 09 12 24.35 & +35 01 39.4 &  E       &$-19.06  $ &  LGG 171         & 2 &    1800  &
 40.0&  220.0&L & $\bigcirc$&Gc93\\
 NGC 2832   & 09 19 46.89 & +33 45 00.0 &  E+2     &$-22.38  $ & Abell 779    & 2 &    1800  &
 160.0&  160.0&L & $\bigcirc$&CGCG\\
 NGC 3115   & 10 05 13.80 &$-$07 43 08.0&  S0$-$   &$-19.77  $ &  Field        & 2 &    1500  &
 43.0&  310.0&L & $\bigcirc$&\\
 NGC 3377   & 10 47 42.36 & +13 59 08.8 &  E5-6    &$-19.16  $ & Leo group (LGG217)    & 1 &    1800  &   35.0
 &   0.0 &L & $\bigcirc$& Gc93\\
 NGC 3379   & 10 47 49.75 & +12 34 54.6 &  E1      &$-20.57  $ & Leo group (LGG 217)   & 1 &     900  &   71.0
 &   0.0 &L & $\bigcirc$&Gc93\\
            &             &             &          &           &              & 2 &    1200  &
            71.0&  251.0&  & & \\
 NGC 3605   & 11 16 46.69 & +18 01 01.0 &  E4-5    &$-17.07  $ &  LGG 237       & 2 &    1800  &
 17.0&   17.0&L &$\triangle$&Gc93\\
 NGC 3608   & 11 16 59.07 & +18 08 54.6 &  E2      &$ -19.62 $ &  LGG 237        & 1 &    1800  &
 75.0 &   0.0 &L &$\bigcirc$&Gc93\\
 NGC 3641   & 11 21 08.85 & +03 11 40.2 &  E pec   &$-17.91  $ &  LGG 233        & 2 &    1800  &
 3.0&  240.0&L &$\triangle$& Gc93\\
 NGC 3665   & 11 24 43.64 & +38 45 45.0 &  SA(s)   &$ -20.84 $ &  LGG 236        & 1 &    1800  &
 30.0 &   0.0 &L & $\square$& Gc93\\
 NGC 3818   & 11 41 57.50 &$-$06 09 20.0 &  E5     &$-19.11  $ &  Field        & 2 &    1800  &
 103.0&  280.0&L &$\bigcirc$&\\
 NGC 4261   & 12 19 23.21 & +05 49 29.7 &  E2-3    &$-21.32  $ &  LGG 278        & 2 &    1800  &
 160.0&  160.0&L &$\bigcirc$&Gc93\\
 NGC 4278   & 12 20 06.83 & +29 16 50.7 & E1-2     &$-19.26  $ &  LGG 279        & 2 &    1800  &
 22.7&   22.0&L &$\bigcirc$&Gc93\\
 NGC 4365   & 12 24 28.34 & +07 19 04.2 &  E3      &$-20.90  $ & Virgo  (LGG 289)& 2 &    1200  &
 40.0&  220.0&L &$\bigcirc$&Gc93\\
 NGC 4374   & 12 25 03.74 & +12 53 13.1 &  E1      &$-20.87  $ & Virgo (LGG 292) & 1 &    1800  &
 135.0 &   0.0 &L &$\bigcirc$&Gc93\\
\hline
 NGC 4415   & 12 26 40.56 & +08 26 07.5 &  S0/a    &$-17.27  $ & Virgo (LGG 292)  & 1 &    4200  &
 0.0  &   0.0 &L &$\bigtriangleup$&Gc93\\
            &             &             &          &           &                  & 2 &    3000  &
            0.0&  180.0&  &       &    \\
 NGC 4431   & 12 27 27.43 & +12 17 23.8 & SA(r)0   &$-16.95  $ & Virgo (LGG 292)  & 1 &    7200  &
 177.0 &   0.0 &L &$\triangle$&Gc93\\
 NGC 4464   & 12 29 21.38 & +08 09 23.1 &  E3      &$-18.12  $ & Virgo (LGG 289)  & 2 &    1800  &
 0.0&  180.0&L &$\square$&Gc93\\
 NGC 4467   & 12 29 30.35 & +07 59 38.3 & E2       &$-16.89  $ & Virgo (LGG 289)  & 2 &    1800  &
 81.2&   99.0&L &$\bigcirc$&Gc93\\
 NGC 4472   & 12 29 46.76 & +07 59 59.9 & E2/S0(2) &$-21.47  $ & Virgo (LGG 292)  & 2 &    1200  &
 155.0&  155.0&L &$\square$&Gc93 \\
 NGC 4478   & 12 30 17.53 & +12 19 40.3 &  E2      &$-19.55  $ & Virgo (LGG 289)  & 2 &    1800  &
 140.0&  140.0&L &$\bigcirc$&Gc93\\
 NGC 4486B  & 12 30 31.82 & +12 29 25.9 & cE0      &$-17.46  $ & Virgo (LGG 289)  & 1 &    1800  &
 117.3 &   0.0 &L &$\bigcirc$&Gc93\\
 NGC 4489   & 12 30 52.34 & +16 45 30.4 & E        &$-18.25  $ & Virgo (LGG 292)  & 1 &    2500  &
 &   0.0 &L &$\triangle$&Gc93\\
 NGC 4552   & 12 35 40.00 & +12 33 22.9 & E        &$-20.91  $ & Virgo        & 1 &    1800  &
 &   0.0 &L &$\bigcirc$&VCC85\\
 NGC 4564   & 12 36 27.01 & +11 26 18.8 & E6       &$-19.43  $ & Virgo (LGG 289)       & 2 &    1500
 &    47.0&   47.0&L &$\bigcirc$&Gc93\\
 NGC 4594   & 12 39 59.43 &$-$11 37 23.0 & SA(s)a  &$-22.36  $ & Field        & 2 &    1013  &
 89.0&  179.0&L &$\bigcirc$&\\
 NGC 4621   & 12 42 02.39 & +11 38 45.1 & E5       &$-20.71  $ & Virgo        & 2 &    1200  &
 165.0&  165.0&L &$\bigcirc$&VCC85\\
 NGC 4636   & 12 42 50.00 & +02 41 16.5 & E--S0    &$-20.78  $ & Field        & 1 &    1200  &  150.0
 &   0.0 &L &$\square$& \\
 NGC 4649   & 12 43 40.19 & +11 33 08.9 & E2       &$-21.53  $ & Virgo (LGG 292) & 1 &     900  &
 105.0 &   0.0 &L &$\bigcirc$&Gc93\\
 NGC 4673   & 12 45 34.77 & +27 03 37.3 & E1--2    &$-20.52  $ &  Coma        & 4 &    1800  & 170.0
 & 170.0 &H &$\bigcirc$&GMP\\
 NGC 4692   & 12 47 55.42 & +27 13 18.3 & E+       &$-21.70  $ &  Coma        & 4 &    1500  &  97.0
 &  97.0 &H &$\bigcirc$&GMP\\
 NGC 4697   & 12 48 35.70 &$-$05 48 03.0 & E6      &$-20.97  $ & LGG 314        & 2 &    1200  &
 70.0&   70.0&L &$\bigcirc$&Gc93\\
 NGC 4742   & 12 51 47.92 &$-$10 27 17.1 & E4      &$-22.40  $ & LGG 307        & 2 &    1800  &
 75.0&   75.0&L &$\bigcirc$&Gc93\\
 NGC 4839   & 12 57 24.31 & +27 29 52.0 & cD;SA0   &$-21.84  $ &  Coma        & 4 &    5400  &  65.0
 &  49.4 &H &$\square$&GMP\\
 NGC 4842A  & 12 57 35.60 & +27 29 36.1 & E/SA0    &$-19.89  $ &  Coma        & 4 &    1800  &
 & 172.4 &H &$\square$&GMP\\
 NGC 4842B  & 12 57 36.14 & +27 29 05.6 & SA0      &$-18.80  $ &  Coma        & 4 &    1800  &
 & 172.4 &H &$\square$&GMP\\
 NGC 4864   & 12 59 13.00 & +27 58 37.2 & E2       &$-20.55  $ &  Coma        & 4 &    1800  &
 & 128.7 &H &$\bigcirc$&GMP\\
 NGC 4865   & 12 59 19.98 & +28 05 02.3 &  E       &$-19.91  $ &  Coma        & 4 &    1800  &
 & 70.0  &H &$\bigcirc$&GMP\\
 NGC 4867   & 12 59 15.00 & +27 58 14.9 & E3       &$-19.01  $ &  Coma        & 4 &    1800  &
 & 128.7 &H &$\bigcirc$&GMP\\
 NGC 4874  & 12 59 35.91 & +27 57 30.8   &cD                 &$-22.53  $ & Coma        & 2 &   1800
 &  39.7 &   79.0&H&$\bigcirc$&GMP\\
           &             &               &                   &           & Coma        & 4 &   3600
           &  39.7 &   39.7& &&\\
 NGC 4875  & 12 59 37.80 & +27 54 26.5   & SAB0              &$-19.72$   & Coma        & 4 &   1800
 &       &   48.5&H&$ \Box$&GMP\\
 NGC 4889  & 13 00 08.03 & +27 58 35.1   & cD                &$-22.46$   & Coma        & 2 &   2178
 &  80.0 &   80.0&H&$\bigcirc$&GMP\\
           &             &               &                   &           &             & 4 &   3800
           &  80.0 &   80.0& & & \\
 NGC 4908  & 13 00 51.55 & +28 02 33.6   & E5                &$-21.01$   & Coma        & 4 &   1800
 &       &  163.0&H&$\square$&GMP\\
 NGC 5638  & 14 29 40.30 & +03 14 00.0   & E1                &$-19.78$   & LGG 386        & 2 &
 1800  & 150.0 &  150.0&L&$\bigcirc$&Gc93\\
 NGC 5796  & 14 59 24.20 &$-$16 37 24.0  & E0--1             &$-20.77$   & LGG 386       & 2 &   1800
 &  95.0 &  194.0&L&$\bigcirc$&Gc93\\
 NGC 5812  & 15 00 55.60 &$-$07 27 26.0  & E0                &$-20.36$   & Field        & 2 &   1800  & 130.0 &  130.0&L&$\bigcirc$\\
 NGC 5813  & 15 01 11.32 & +01 42 06.4   & E1--2             &$-20.99$   & LGG 393       & 2 &   1800
 & 145.0 &  145.0&L&$\bigcirc$&Gc93\\
 NGC 5831  & 15 04 07.10 & +01 13 11.7   & E3                &$-19.72$   & LGG 393       & 2 &   1800
 &  55.0 &  235.0&L&$\bigcirc$&Gc93\\
 NGC 5845  & 15 06 00.90 & +01 38 01.4   & E                 &$-18.58$   & LGG 392       & 2 &   1800
 & 150.0 &  150.0&L&$\bigcirc$&Gc93\\
 NGC 5846  & 15 06 29.37 & +01 36 19.0   & E0--1             &$-21.30$   & LGG 393        & 2 &
 1200  &       &  182.0&L&$\bigcirc$&Gc93\\
           &             &               &                   &           &             & 4 &   1000
           &       &  182.0& & & \\
\hline
 NGC 5846A & 15 06 28.90 & +01 35 43.0   & cE2--3            &$-19.83$   & LGG 393        & 2 &
 1200  & 120.0 &  182.0&L&$\bigcirc$&Gc93\\
           &             &               &                   &           &             & 4 &   1000  & 120.0 &  182.0& &\\
 NGC 6127  & 16 19 11.73 & +57 59 02.6   & E                 &$-21.39$   & Field       & 2 &   1800
 &       &   25.0&L&$\bigcirc$&\\
 NGC 6166  & 16 28 38.30 & +39 33 04.7   & S0                &$-23.00$   & Abell 2199  & 2 &   2173
 &  35.0 &   35.0&H&$\square$&CGCG\\
           &             &               &                   &           &             & 3 &   1200  &  35.0 &   35.0& &\\
 NGC 6411  & 17 35 32.82 & +60 48 47.2   & E                 &$-21.07$   & Field       & 3 &   1200
 &  70.0 &   65.0&L&$\bigcirc$&\\
 NGC 6482  & 17 51 48.94 & +23 04 19.1   & E                 &$-22.11$   & Field       & 4 &   1246
 &  70.0 &  160.0&L&$\bigcirc$&\\
 NGC 6577  & 18 12 01.29 & +21 27 49.4   & E                 &$-20.82$   & Field       & 4 &   1800
 & 178.0 &  178.0&L&$\bigcirc$&\\
 NGC 6702  & 18 46 57.64 & +45 42 19.8   & E:                &$-21.42$   & Field       & 2 &   2000
 &  65.0 &   65.0&L&$\bigcirc$&\\
 NGC 6703  & 18 47 18.86 & +45 33 01.0   & SA0--             &$-20.83$   & Field       & 2 &   1800
 &       &   60.0&L&$\square$&\\
           &             &               &                   &           &             & 3 &   1800
           &       &   65.0& &&\\
           &             &               &                   &           &             & 4 &   1200
           &       &   60.0& &&\\
 NGC 7052  & 21 18 33.13 & +26 26 48.7   & E                 &$-21.06$   & Field       & 3 &   1200
 &  64.0 &   65.0&L&$\bigcirc$&\\
 NGC 7332  & 22 37 24.62 & +23 47 55.0   & S0                &$-19.16$   & Field        & 3 &   2400
 & 152.0 &   65.0&L&$\square$&\\
 IC  767   & 12 11 02.80 & +12 06 15.0   & E                &$-18.04$   & Virgo        & 1 &   2000
 &       &    0.0&L&$\triangle$&VCC85\\
 IC  794   & 01 08 49.99 &$-$15 56 54.4  & dE3               &$-18.10$   & LGG 286       & 2 &   2000
 & 110.0 &  110.0&L&$\triangle$Gc93\\
 IC 832    & 12 53 59.10 & +26 26 38.0   & E?                &$-19.96$   & Coma        & 4 &   1800
 & 168.0 &  168.0&H&$\bigcirc$&CGCG\\
 IC 3618   & 12 39 17.12 & +26 40 39.7   & E                 &$-19.23$   & Coma        & 4 &   1800
 &  74.0 &   74.0&H&$\bigcirc$&CGCG\\ % CGCG 159--41
 IC 3957   & 12 59 07.30 & +27 46 02.0   & E                 &$-19.26$   & Coma        & 4 &   1800
 &       &    9.3&H&$\bigcirc$&GMP\\
 IC 3959   & 12 59 08.18 & +27 47 02.7   & E                 &$-20.03$   & Coma        & 4 &   3600
 &       &    9.3&H&$\bigcirc$&GMP\\
 IC 3963   & 12 59 13.48 & +27 46 28.3   & SA0               &$-19.25$   & Coma        & 4 &   1800
 &  84.0 &  296.4&H&$\square$&GMP\\
 IC 3973   & 12 59 30.60 & +27 53 03.2   & S0/a              &$-18.85$   & Coma        & 4 &   1800
 & 142.0 &   48.5&H&$\square$&GMP\\
 IC 4026   & 13 00 22.12 & +28 02 48.8   & SB0               &$-19.84$   & Coma        & 4 &   1750
 &  59.0 &  132.3&H&$\square$&GMP\\
 IC 4042   & 13 00 42.72 & +27 58 16.4   & SA0/a             &$-19.80$   & Coma        & 4 &   1200
 &   2.0 &  177.9&H&$\square$&GMP\\
 IC 4051   & 13 00 54.44 & +28 00 27.0   & E2                &$-20.21$   & Coma        & 4 &   1800
 &  95.0 &  163.0&H&$\bigcirc$&GMP\\
\par
 MCG+05-30-048& 12 39 18.90& +27 46 24.5 & E2                &$-19.63$   & Coma        & 4 &   1800
 &  35.0 &   35.0&H&$\bigcirc$&CGCG\\ % CGCG 159--43
 MCG+05-30-094& 12 49 42.28& +26 53 30.5 & E1:               &$-20.14$   & Coma        & 4 &   1800
 & 149.0 &  149.0&H&$\bigcirc$&CGCG\\%CGCG 159--83
 MCG+05-30-101& 12 50 54.03& +27 50 30.1 & E1                &$-20.03$   & Coma        & 4 &   1800
 &  63.0 &   20.0&H&$\bigcirc$&CGCG\\%CGCG 159--89
 DRCG 27--32  & 12 57 22.75& +27 29 36.3 & S0                &$-19.11$   & Coma        & 4 &   3600
 &       &   49.4&H&$\square$&GMP\\
 DRCG 27--127 & 12 59 40.37& +27 58 05.6 &E--S0              &$-18.49$   & Coma        & 4 &   1800
 &       &   9.0 &H&$\square$&GMP\\
 DRCG 27--128 & 12 59 39.48& +27 57 13.6 & S0A               &$-19.63$   & Coma        & 4 &   1800
 &       &   9.0 &H&$\square$&GMP\\
 GMP 2585     &13 00 35.39 & +27 56 33.9 & dE                &           & Coma        & 4 &   7200
 &       &   67.5&H&$\triangle$&GMP\\
 GMP 3121     &12 59 51.50 &+28 04 25.0  & dE                &           & Coma        & 4 &   3600
 &       &  110.4&H&$\triangle$&GMP\\
 GMP 3131     &12 59 50.25 &+27 54 44.5  & dE                &           & Coma        & 4 &   7200
 &       &   41.1&H&$\triangle$&GMP\\
 GMP 3196     &12 59 44.72 &+27 53 22.8  & dE                &           & Coma        & 4 &   7200
 &       &   41.1&H&$\triangle$&GMP\\
 MCG+05-31-063&12 59 20.50 &+28 03 58.0  & E6                &$-19.68$   & Coma        & 4 &   1800
 &       &   70.0&H&$\square$&GMP\\
 PGC 126756   &13 00 24.78 &+27 55 38.1  &                   &$-17.14$   & Coma        & 4 &   7200
 & 166.0 &   67.5&H&$\triangle$&GMP\\
 PGC 126775   &12 59 57.66 &+28 03 54.7  &                   &$-16.86$   & Coma        & 4 &   3600
 &  52.0 &  110.4&H&$\triangle$&GMP\\
 Rb 091       &13 00 16.90 &+28 03 50.0  &  SB0              &$-18.44$   & Coma        & 4 &   1200
 &  76.0 &  132.3&H&$\square$&GMP\\
 Rb 113       &13 00 42.80 &+27 57 46.5  &  SB0              &$-19.35$   & Coma        & 4 &   1200
 & 101.0 &  177.9&H&$\square$&GMP\\
\hline
\end{tabular}
\end{table}