Table 2: Line ratios and electron densities derived using the default atomic parameters described in Table 3.
  [O  II] [S  II] [Cl  III] [Ar  IV]
Sourcea $\lambda3729/$ ${\rm log}~N_{\rm e}$ $\lambda6716/$ ${\rm log}~N_{\rm e}$ $\lambda5517/$ ${\rm log}~N_{\rm e}$ $\lambda4711/$ ${\rm log}~N_{\rm e}$
  $\lambda3726$ (cm-3) $\lambda 6731$ (cm-3) $\lambda5537$ (cm-3) $\lambda4740$ (cm-3)

BoBn1		             1.712 $\pm$ .422 <1.26
Cn 1-5s     0.585 $\pm$ .010 $\rm 3.68^{+.03}_{-.03 }$ 0.826 $\pm$ .041 $\rm 3.53^{+.05}_{-.06 }$ 1.159 $\pm$ .106 $\rm 3.15^{+.20}_{-.36 }$
Cn 2-1 .480 $\pm$ .010 $\rm 3.71^{+.04}_{-.04 }$ 0.549 $\pm$ .021 $\rm 3.81^{+.10}_{-.09 }$ 0.602 $\pm$ .069 $\rm 3.87^{+.10}_{-.12 }$ 0.472 $\pm$ .016 $\rm 4.23^{+.03}_{-.03 }$
Cn 3-1 .487 $\pm$ .005 $\rm 3.69^{+.02}_{-.02 }$            
H 1-35 .378 $\pm$ .017 $\rm 4.37^{+.32}_{-.18 }$ 0.483 $\pm$ .033 $\rm 4.29^{+1.6}_{-.29 }$ 0.429 $\pm$ .074 $\rm 4.20^{+.17}_{-.19 }$ 1.302 $\pm$ .256 $\rm 2.67^{+.63}_{-2.7 }$
H 1-36     0.503 $\pm$ .023 $\rm 4.09^{+.21}_{-.16 }$ 0.397 $\pm$ .039 $\rm 4.28^{+.11}_{-.11 }$ 0.253 $\pm$ .008 $\rm 4.74^{+.03}_{-.03 }$
H 1-41     0.813 $\pm$ .040 $\rm 3.12^{+.08}_{-.08 }$ 1.101 $\pm$ .150 $\rm 3.12^{+.21}_{-.39 }$ 1.214 $\pm$ .063 $\rm 3.01^{+.16}_{-.23 }$
H 1-42     0.532 $\pm$ .014 $\rm 3.91^{+.09}_{-.08 }$ 0.719 $\pm$ .093 $\rm 3.69^{+.12}_{-.15 }$ 0.704 $\pm$ .020 $\rm 3.88^{+.03}_{-.03 }$
H 1-50 .455 $\pm$ .016 $\rm 3.81^{+.08}_{-.07 }$ 0.538 $\pm$ .017 $\rm 3.88^{+.09}_{-.08 }$ 0.585 $\pm$ .058 $\rm 3.89^{+.09}_{-.11 }$ 0.565 $\pm$ .013 $\rm 4.08^{+.02}_{-.02 }$
H 1-54     0.493 $\pm$ .017 $\rm 4.18^{+.18}_{-.14 }$ 0.521 $\pm$ .079 $\rm 4.01^{+.14}_{-.16 }$    
He 2-113 .492 $\pm$ .027 $\rm 3.67^{+.10}_{-.09 }$            
He 2-118 .440 $\pm$ .012 $\rm 3.89^{+.06}_{-.06 }$ 0.518 $\pm$ .032 $\rm 3.99^{+.24}_{-.18 }$ 0.541 $\pm$ .082 $\rm 3.97^{+.14}_{-.16 }$ 0.408 $\pm$ .017 $\rm 4.34^{+.03}_{-.03 }$
He 2-136     0.578 $\pm$ .017 $\rm 3.69^{+.06}_{-.06 }$ 0.855 $\pm$ .131 $\rm 3.49^{+.17}_{-.24 }$ 1.040 $\pm$ .033 $\rm 3.40^{+.05}_{-.06 }$
He 2-142     0.424 $\pm$ .022 $\rm 3.63^{+.00}_{-.00 }$ 0.433 $\pm$ .073 $\rm 4.19^{+.17}_{-.19 }$    
He 2-185     0.617 $\pm$ .030 $\rm 3.56^{+.09}_{-.09 }$ 0.893 $\pm$ .080 $\rm 3.44^{+.11}_{-.13 }$ 0.781 $\pm$ .024 $\rm 3.78^{+.03}_{-.03 }$
He 2-434     0.571 $\pm$ .078 $\rm 3.71^{+.36}_{-.28 }$ 1.000 $\pm$ .150 $\rm 3.29^{+.19}_{-.31 }$ 0.926 $\pm$ .026 $\rm 3.58^{+.04}_{-.05 }$
He 2-90     0.439 $\pm$ .042 $\rm 3.44^{+.00}_{-.79 }$ 0.752 $\pm$ .130 $\rm 3.64^{+.16}_{-.23 }$    
He 2-97     0.495 $\pm$ .027 $\rm 4.17^{+.34}_{-.22 }$ 0.345 $\pm$ .040 $\rm 4.45^{+.15}_{-.14 }$ 0.588 $\pm$ .055 $\rm 4.05^{+.08}_{-.09 }$
He 3-1333 .916 $\pm$ .030 $\rm 2.84^{+.05}_{-.05 }$            
Hu 1-2 .487 $\pm$ .011 $\rm 3.69^{+.04}_{-.04 }$ 0.595 $\pm$ .014 $\rm 3.64^{+.05}_{-.05 }$ 0.787 $\pm$ .031 $\rm 3.59^{+.05}_{-.05 }$ 0.971 $\pm$ .019 $\rm 3.50^{+.03}_{-.03 }$
Hu 2-1 .424 $\pm$ .006 $\rm 3.97^{+.04}_{-.04 }$            
IC 1297 .570 $\pm$ .022 $\rm 3.45^{+.05}_{-.05 }$ 0.645 $\pm$ .021 $\rm 3.48^{+.05}_{-.05 }$ 0.943 $\pm$ .071 $\rm 3.36^{+.09}_{-.11 }$ 1.009 $\pm$ .021 $\rm 3.44^{+.04}_{-.03 }$
IC 3568 .626 $\pm$ .025 $\rm 3.33^{+.05}_{-.05 }$ 0.775 $\pm$ .102 $\rm 3.19^{+.19}_{-.22 }$ 1.427 $\pm$ .079 $\rm 1.59^{+.83}_{-.00 }$ 1.145 $\pm$ .028 $\rm 3.18^{+.06}_{-.06 }$
$\rm IC~4191^s$     0.535 $\pm$ .014 $\rm 3.89^{+.08}_{-.07 }$ 0.541 $\pm$ .032 $\rm 3.97^{+.06}_{-.06 }$ 0.588 $\pm$ .014 $\rm 4.05^{+.02}_{-.02 }$
$\rm IC~4406^s$     1.027 $\pm$ .030 $\rm 2.73^{+.05}_{-.05 }$ 1.065 $\pm$ .092 $\rm 3.18^{+.13}_{-.19 }$ 2.000 $\pm$ .204 <1.26
IC 4593     0.637 $\pm$ .073 $\rm 3.51^{+.22}_{-.20 }$ 0.667 $\pm$ .107 $\rm 3.77^{+.14}_{-.18 }$    
IC 4634 .438 $\pm$ .019 $\rm 3.89^{+.11}_{-.09 }$ 0.521 $\pm$ .014 $\rm 3.97^{+.10}_{-.08 }$ 0.699 $\pm$ .068 $\rm 3.72^{+.10}_{-.11 }$ 0.735 $\pm$ .016 $\rm 3.84^{+.02}_{-.02 }$
IC 4637             0.746 $\pm$ .117 $\rm 3.83^{+.14}_{-.20 }$
IC 4699     0.649 $\pm$ .089 $\rm 3.47^{+.25}_{-.24 }$ 1.359 $\pm$ .201 $\rm 2.38^{+.57}_{-2.3 }$ 1.261 $\pm$ .029 $\rm 2.86^{+.09}_{-.14 }$
IC 4776 .437 $\pm$ .018 $\rm 3.90^{+.10}_{-.08 }$ 0.505 $\pm$ .023 $\rm 4.08^{+.21}_{-.16 }$ 0.565 $\pm$ .035 $\rm 3.93^{+.06}_{-.06 }$ 0.340 $\pm$ .023 $\rm 4.49^{+.05}_{-.06 }$
IC 4846     0.546 $\pm$ .018 $\rm 3.83^{+.09}_{-.08 }$ 0.758 $\pm$ .086 $\rm 3.63^{+.11}_{-.14 }$ 0.746 $\pm$ .028 $\rm 3.83^{+.04}_{-.04 }$
IC 4997 .393 $\pm$ .016 $\rm 4.20^{+.19}_{-.13 }$ 0.485 $\pm$ .009 $\rm 4.24^{+.12}_{-.10 }$ 0.508 $\pm$ .057 $\rm 4.03^{+.11}_{-.12 }$ 0.280 $\pm$ .026 $\rm 4.65^{+.08}_{-.08 }$
IC 5217 .456 $\pm$ .013 $\rm 3.81^{+.06}_{-.05 }$            
M 1-20 .420 $\pm$ .018 $\rm 4.00^{+.12}_{-.10 }$ 0.524 $\pm$ .016 $\rm 3.95^{+.11}_{-.10 }$ 0.775 $\pm$ .126 $\rm 3.60^{+.16}_{-.21 }$ 0.599 $\pm$ .025 $\rm 4.03^{+.04}_{-.04 }$
M 1-29     0.629 $\pm$ .008 $\rm 3.53^{+.03}_{-.03 }$ 0.800 $\pm$ .115 $\rm 3.57^{+.14}_{-.19 }$    
M 1-42 .708 $\pm$ .051 $\rm 3.12^{+.09}_{-.09 }$ 0.826 $\pm$ .034 $\rm 3.09^{+.07}_{-.07 }$ 1.050 $\pm$ .138 $\rm 3.23^{+.18}_{-.29 }$ 1.295 $\pm$ .045 $\rm 2.69^{+.19}_{-.35 }$
M 1-61     0.485 $\pm$ .014 $\rm 4.26^{+.18}_{-.14 }$ 0.437 $\pm$ .050 $\rm 4.18^{+.12}_{-.12 }$ 0.394 $\pm$ .025 $\rm 4.37^{+.05}_{-.05 }$
M 1-64 1.23 $\pm0.01$ $\rm 2.32^{+.03}_{-.03 }$            
M 2-23     0.483 $\pm$ .047 $\rm 4.29^{+.00}_{-.40 }$ 0.599 $\pm$ .093 $\rm 3.87^{+.14}_{-.17 }$ 0.263 $\pm$ .016 $\rm 4.70^{+.05}_{-.05 }$
M 2-24 .424 $\pm$ .036 $\rm 3.99^{+.09}_{-.08 }$         0.242 $\pm$ .043 $\rm 4.78^{+.16}_{-.17 }$
M 2-27     0.535 $\pm$ .011 $\rm 3.88^{+.07}_{-.06 }$ 0.461 $\pm$ .045 $\rm 4.12^{+.09}_{-.10 }$    
M 2-31     0.552 $\pm$ .018 $\rm 3.80^{+.08}_{-.07 }$ 0.606 $\pm$ .055 $\rm 3.86^{+.08}_{-.09 }$    
M 2-33     0.746 $\pm$ .056 $\rm 3.25^{+.12}_{-.13 }$     1.148 $\pm$ .141 $\rm 3.18^{+.24}_{-.56 }$
M 2-36 .509 $\pm$ .035 $\rm 3.62^{+.12}_{-.10 }$ 0.599 $\pm$ .032 $\rm 3.62^{+.11}_{-.11 }$ 0.709 $\pm$ .030 $\rm 3.70^{+.04}_{-.05 }$ 0.870 $\pm$ .023 $\rm 3.65^{+.04}_{-.03 }$
M 2-39     0.578 $\pm$ .023 $\rm 3.69^{+.10}_{-.09 }$     0.800 $\pm$ .115 $\rm 3.75^{+.14}_{-.19 }$
M 2-4 .482 $\pm$ .014 $\rm 3.71^{+.05}_{-.05 }$ 0.549 $\pm$ .024 $\rm 3.81^{+.12}_{-.11 }$ 0.641 $\pm$ .058 $\rm 3.80^{+.08}_{-.09 }$ 0.610 $\pm$ .048 $\rm 4.02^{+.06}_{-.07 }$
M 2-42     0.621 $\pm$ .019 $\rm 3.55^{+.06}_{-.06 }$ 0.901 $\pm$ .162 $\rm 3.42^{+.20}_{-.31 }$    
M 2-6     0.532 $\pm$ .028 $\rm 3.91^{+.17}_{-.14 }$     1.168 $\pm$ .203 $\rm 3.14^{+.33}_{-1.9 }$
M 3-21 .465 $\pm$ .008 $\rm 3.78^{+.03}_{-.03 }$ 0.503 $\pm$ .018 $\rm 4.10^{+.15}_{-.12 }$ 0.515 $\pm$ .043 $\rm 4.02^{+.08}_{-.09 }$ 0.395 $\pm$ .008 $\rm 4.34^{+.02}_{-.02 }$
M 3-27 .584 $\pm$ .024 $\rm 3.42^{+.06}_{-.05 }$            
M 3-29     0.917 $\pm$ .034 $\rm 2.93^{+.06}_{-.06 }$ 1.086 $\pm$ .252 $\rm 3.15^{+.55}_{-1.8 }$    
M 3-32 .518 $\pm$ .015 $\rm 3.59^{+.05}_{-.04 }$ 0.633 $\pm$ .036 $\rm 3.52^{+.10}_{-.10 }$ 0.893 $\pm$ .112 $\rm 3.44^{+.14}_{-.19 }$ 1.178 $\pm$ .050 $\rm 3.11^{+.11}_{-.15 }$
M 3-33     0.917 $\pm$ .084 $\rm 2.93^{+.14}_{-.17 }$     0.980 $\pm$ .029 $\rm 3.49^{+.04}_{-.04 }$
M 3-7     0.556 $\pm$ .015 $\rm 3.79^{+.08}_{-.07 }$ 0.990 $\pm$ .196 $\rm 3.30^{+.24}_{-.45 }$    
Me 1-1     0.546 $\pm$ .021 $\rm 3.83^{+.10}_{-.09 }$ 0.741 $\pm$ .066 $\rm 3.66^{+.09}_{-.10 }$ 0.735 $\pm$ .016 $\rm 3.84^{+.03}_{-.03 }$
Me 2-1             1.111 $\pm$ .030 $\rm 3.26^{+.06}_{-.06 }$
Me 2-2 .409 $\pm$ .008 $\rm 4.07^{+.06}_{-.06 }$            
MyCn 18     0.552 $\pm$ .015 $\rm 3.80^{+.07}_{-.07 }$ 0.485 $\pm$ .054 $\rm 4.08^{+.11}_{-.12 }$ 1.119 $\pm$ .143 $\rm 3.25^{+.23}_{-.47 }$
$\rm Mz~3^s$     0.571 $\pm$ .013 $\rm 3.72^{+.05}_{-.05 }$ 0.333 $\pm$ .063 $\rm 4.49^{+.26}_{-.24 }$    
NGC 3242     0.725 $\pm$ .042 $\rm 3.30^{+.09}_{-.09 }$ 1.082 $\pm$ .069 $\rm 3.15^{+.10}_{-.14 }$ 1.079 $\pm$ .022 $\rm 3.32^{+.04}_{-.04 }$
NGC 40 .750 $\pm$ .032 $\rm 3.10^{+.05}_{-.05 }$ 0.725 $\pm$ .058 $\rm 3.29^{+.12}_{-.12 }$ 1.186 $\pm$ .042 $\rm 2.95^{+.08}_{-.10 }$    
NGC 5307     0.625 $\pm$ .055 $\rm 3.55^{+.17}_{-.16 }$ 1.464 $\pm$ .219 <1.15 1.059 $\pm$ .019 $\rm 3.36^{+.03}_{-.04 }$
NGC 5873 .511 $\pm$ .023 $\rm 3.61^{+.08}_{-.07 }$ 0.571 $\pm$ .020 $\rm 3.72^{+.09}_{-.08 }$ 0.813 $\pm$ .093 $\rm 3.55^{+.12}_{-.15 }$ 0.943 $\pm$ .018 $\rm 3.55^{+.02}_{-.02 }$
NGC 5882 .485 $\pm$ .026 $\rm 3.70^{+.10}_{-.09 }$            
NGC 5979 .690 $\pm$ .038 $\rm 3.21^{+.07}_{-.07 }$ 0.775 $\pm$ .090 $\rm 3.19^{+.17}_{-.19 }$ 0.917 $\pm$ .135 $\rm 3.41^{+.16}_{-.23 }$ 1.107 $\pm$ .018 $\rm 3.27^{+.03}_{-.04 }$
NGC 6058 .722 $\pm$ .130 $\rm 3.15^{+.25}_{-.21 }$         1.229 $\pm$ .208 $\rm 2.96^{+.41}_{-1.7}$
NGC 6072     1.103 $\pm$ .030 $\rm 2.59^{+.06}_{-.06 }$ 1.508 $\pm$ .284 <1.15 $\pm$ .043 <1.26
NGC 6153 .474 $\pm$ .002 $\rm 3.74^{+.01}_{-.01 }$ 0.617 $\pm$ .023 $\rm 3.56^{+.07}_{-.07 }$ 0.794 $\pm$ .101 $\rm 3.58^{+.13}_{-.17 }$ 0.962 $\pm$ .028 $\rm 3.52^{+.05}_{-.05 }$
NGC 6210 .509 $\pm$ .021 $\rm 3.62^{+.07}_{-.06 }$ 0.602 $\pm$ .015 $\rm 3.61^{+.04}_{-.04 }$ 0.855 $\pm$ .015 $\rm 3.50^{+.02}_{-.02 }$ 0.763 $\pm$ .274 $\rm 3.80^{+.28}_{-.73 }$
NGC 6302 .460 $\pm$ .024 $\rm 3.80^{+.11}_{-.09 }$ 0.500 $\pm$ .020 $\rm 4.11^{+.19}_{-.15 }$ 0.369 $\pm$ .031 $\rm 4.36^{+.10}_{-.10 }$ 0.559 $\pm$ .006 $\rm 4.09^{+.01}_{-.01 }$
NGC 6439 .527 $\pm$ .013 $\rm 3.56^{+.04}_{-.04 }$ 0.568 $\pm$ .026 $\rm 3.74^{+.10}_{-.09 }$ 0.685 $\pm$ .061 $\rm 3.74^{+.09}_{-.10 }$ 0.763 $\pm$ .017 $\rm 3.80^{+.02}_{-.02 }$
NGC 6537     0.505 $\pm$ .008 $\rm 4.07^{+.06}_{-.06 }$ 0.407 $\pm$ .038 $\rm 4.26^{+.10}_{-.10 }$ 0.645 $\pm$ .046 $\rm 3.97^{+.06}_{-.07 }$
NGC 6543 .491 $\pm$ .010 $\rm 3.68^{+.03}_{-.03 }$            
NGC 6565     0.741 $\pm$ .022 $\rm 3.26^{+.05}_{-.05 }$ 1.083 $\pm$ .117 $\rm 3.15^{+.17}_{-.26 }$ 1.266 $\pm$ .064 $\rm 2.84^{+.20}_{-.37 }$
$\rm NGC~6567^s$ .434 $\pm$ .008 $\rm 3.92^{+.05}_{-.04 }$ 0.559 $\pm$ .019 $\rm 3.78^{+.09}_{-.08 }$ 0.505 $\pm$ .048 $\rm 4.04^{+.09}_{-.10 }$ 0.690 $\pm$ .015 $\rm 3.90^{+.02}_{-.02 }$
NGC 6572 .421 $\pm$ .024 $\rm 3.99^{+.18}_{-.13 }$ 0.472 $\pm$ .016 $\rm 4.42^{+2.5}_{-.21 }$ 0.439 $\pm$ .015 $\rm 4.18^{+.03}_{-.04 }$ 0.500 $\pm$ .020 $\rm 4.18^{+.03}_{-.03 }$
NGC 6578     0.625 $\pm$ .020 $\rm 3.54^{+.06}_{-.06 }$ 0.971 $\pm$ .132 $\rm 3.33^{+.17}_{-.26 }$ 0.901 $\pm$ .024 $\rm 3.61^{+.06}_{-.06 }$
NGC 6620 .605 $\pm$ .012 $\rm 3.37^{+.03}_{-.02 }$ 0.671 $\pm$ .032 $\rm 3.42^{+.08}_{-.08 }$ 0.901 $\pm$ .065 $\rm 3.43^{+.09}_{-.11 }$ 1.030 $\pm$ .031 $\rm 3.41^{+.05}_{-.06 }$
NGC 6720 .995 $\pm$ .044 $\rm 2.72^{+.07}_{-.07 }$ 1.036 $\pm$ .046 $\rm 2.72^{+.08}_{-.09 }$ 1.287 $\pm$ .045 $\rm 2.69^{+.13}_{-.17 }$ 1.248 $\pm$ .061 $\rm 2.90^{+.18}_{-.30 }$
NGC 6741 .507 $\pm$ .022 $\rm 3.62^{+.07}_{-.07 }$ 0.571 $\pm$ .010 $\rm 3.72^{+.04}_{-.04 }$ 0.725 $\pm$ .032 $\rm 3.68^{+.04}_{-.05 }$ 0.735 $\pm$ .043 $\rm 3.84^{+.06}_{-.07 }$
NGC 6778 .812 $\pm$ .021 $\rm 3.00^{+.03}_{-.03 }$ 0.893 $\pm$ .016 $\rm 2.97^{+.03}_{-.03 }$ 0.893 $\pm$ .016 $\rm 3.44^{+.02}_{-.02 }$    
NGC 6781 1.17 $\pm0.04$ $\rm 2.43^{+.07}_{-.07 }$ 1.214 $\pm$ .028 $\rm 2.35^{+.07}_{-.08 }$ 1.126 $\pm$ .169 $\rm 3.07^{+.24}_{-.52 }$ 2.387 $\pm$ .655 <1.26
NGC 6790 .399 $\pm$ .023 $\rm 4.15^{+.25}_{-.17 }$ 0.452 $\pm$ .000 $\rm 5.04^{+.00}_{-.00 }$ 0.402 $\pm$ .000 $\rm 4.27^{+.00}_{-.00 }$ 0.242 $\pm$ .001 $\rm 4.78^{+.00}_{-.00 }$
NGC 6803 .477 $\pm$ .005 $\rm 3.73^{+.02}_{-.02 }$            
NGC 6807 .434 $\pm$ .010 $\rm 3.92^{+.06}_{-.05 }$            
NGC 6818 .682 $\pm$ .013 $\rm 3.22^{+.02}_{-.02 }$ 0.741 $\pm$ .016 $\rm 3.27^{+.04}_{-.04 }$ 1.029 $\pm$ .043 $\rm 3.24^{+.06}_{-.07 }$ 1.070 $\pm$ .014 $\rm 3.34^{+.02}_{-.03 }$
NGC 6826 .657 $\pm$ .031 $\rm 3.27^{+.06}_{-.06 }$ 0.730 $\pm$ .027 $\rm 3.28^{+.06}_{-.06 }$ 1.098 $\pm$ .052 $\rm 3.12^{+.08}_{-.10 }$ 1.073 $\pm$ .092 $\rm 3.33^{+.15}_{-.21 }$
NGC 6833 .381 $\pm$ .014 $\rm 4.34^{+.22}_{-.15 }$            
NGC 6853 1.19 $\pm0.02$ $\rm 2.40^{+.03}_{-.03 }$            
NGC 6879 .492 $\pm$ .007 $\rm 3.67^{+.03}_{-.03 }$            
NGC 6884 .465 $\pm$ .037 $\rm 3.77^{+.17}_{-.13 }$ 0.529 $\pm$ .020 $\rm 3.91^{+.11}_{-.10 }$ 0.699 $\pm$ .024 $\rm 3.72^{+.04}_{-.04 }$ 0.606 $\pm$ .206 $\rm 4.02^{+.24}_{-.43 }$
NGC 6886 .501 $\pm$ .007 $\rm 3.64^{+.02}_{-.02 }$            
NGC 7008 .770 $\pm$ .038 $\rm 3.07^{+.06}_{-.06 }$            
NGC 7009 .498 $\pm$ .019 $\rm 3.65^{+.07}_{-.06 }$ 0.599 $\pm$ .022 $\rm 3.62^{+.07}_{-.07 }$ 0.787 $\pm$ .031 $\rm 3.59^{+.04}_{-.05 }$ 0.885 $\pm$ .016 $\rm 3.63^{+.02}_{-.03 }$
NGC 7026 .549 $\pm$ .010 $\rm 3.50^{+.03}_{-.02 }$            
NGC 7662 .605 $\pm$ .031 $\rm 3.37^{+.07}_{-.06 }$ 0.654 $\pm$ .026 $\rm 3.46^{+.07}_{-.07 }$ 1.010 $\pm$ .034 $\rm 3.27^{+.05}_{-.05 }$ 1.065 $\pm$ .025 $\rm 3.35^{+.04}_{+.05 }$
PC 12     0.568 $\pm$ .016 $\rm 3.73^{+.06}_{-.06 }$ 0.758 $\pm$ .092 $\rm 3.63^{+.12}_{-.15 }$    
PC 14     0.625 $\pm$ .020 $\rm 3.54^{+.06}_{-.06 }$ 0.813 $\pm$ .079 $\rm 3.55^{+.11}_{-.13 }$ 0.926 $\pm$ .026 $\rm 3.58^{+.03}_{-.04 }$
PRMG1             1.220 $\pm$ .073 $\rm 3.00^{+.18}_{+.31 }$
Sn 1 .632 $\pm$ .037 $\rm 3.32^{+.08}_{-.07 }$ 0.490 $\pm$ .065 $\rm 4.21^{+1.3}_{-.45 }$ 0.990 $\pm$ .255 $\rm 3.30^{+.29}_{-.78 }$ 1.066 $\pm$ .047 $\rm 3.35^{+.08}_{+.10 }$
Vy 1-1 .613 $\pm$ .021 $\rm 3.36^{+.05}_{-.04 }$            
Vy 2-1     0.621 $\pm$ .027 $\rm 3.55^{+.08}_{-.08 }$ 0.714 $\pm$ .061 $\rm 3.69^{+.08}_{-.09 }$ 0.917 $\pm$ .042 $\rm 3.59^{+.06}_{-.07 }$
a A superscript "s'' indicates that the measured line ratios were based on scanned spectra.


Source LaTeX | All tables | In the text