#   Original parameters of Gasteiger and Marsili
#                  a       b       c      d       formal_charge
GASPARM	h	  7.17	  6.24	 -0.56	 20.02	  0.00
GASPARM	c1	 10.39	  9.45	  0.73	 20.57	  0.00
GASPARM	c2	  8.79	  9.32	  1.51	 19.62	  0.00
GASPARM	c3	  7.98	  9.18	  1.88	 19.04	  0.00
GASPARM	cg	  8.79	  9.32	  1.51	 19.62	  0.04
GASPARM	n1	 15.68	 11.70	 -0.27	 27.11	  0.00
GASPARM	n2	 12.87	 11.15	  0.85	 24.87	  0.00
GASPARM	n3	 11.54	 10.82	  1.36	 23.72	  0.00
GASPARM	na 	 12.32	 11.20	  1.34	 24.86	  0.00
GASPARM	na+	 12.32	 11.20	  1.34	 24.86	  1.00
GASPARM	ng	 12.32	 11.20	  1.34	 24.86	  0.32
GASPARM	n4	  0.00	 11.86	 11.86	 23.72	  1.00
GASPARM	o2	 17.07	 13.79	  0.47	 31.33	  0.00
GASPARM	o3	 14.18	 12.92	  1.39	 28.49	  0.00
GASPARM	o-1	 17.07	 13.79	  0.47	 31.33	 -1.00
GASPARM	o-2	 17.07	 13.79	  0.47	 31.33	 -0.50
GASPARM	os	 17.07	 13.79	  0.47	 31.33	 -1.00
GASPARM	op#	 17.07	 13.79	  0.47	 31.33	 -1.00
GASPARM	op	 17.07	 13.79	  0.47	 31.33	 -0.50
GASPARM	op=	 17.07	 13.79	  0.47	 31.33	 -0.67
GASPARM	s	 10.14	  9.13	  1.38	 20.65	  0.00
GASPARM	s2	 10.88	  9.485	  1.325	 21.69	  0.00
GASPARM	s-1	 10.88	  9.485	  1.325	 21.69	 -1.00
GASPARM	s3	 10.14	  9.13	  1.38	 20.65	  0.00
GASPARM	so	 10.14	  9.13	  1.38	 20.65	  1.00
GASPARM	so1	 12.00	 10.805	  1.195	 24.00	  1.00
GASPARM	so2	 12.00	 10.805	  1.195	 24.00	  2.00
GASPARM	so3	 12.00	 10.805	  1.195	 24.00	  3.00
GASPARM	so4	 12.00	 10.805	  1.195	 24.00	  4.00
GASPARM	f	 14.66	 13.85	  2.31	 30.82	  0.00
GASPARM	cl	 11.00	  9.69	  1.35	 22.04	  0.00
GASPARM	br	 10.08	  8.47	  1.16	 19.71	  0.00
GASPARM	i	  9.90	  7.96	  0.96	 18.82	  0.00
GASPARM	p#	  8.90	  8.24	  0.96	 18.10	  1.00
GASPARM	p=	  8.90	  8.24	  0.96	 18.10	  0.01
GASPARM	pn	  8.90	  8.24	  0.96	 18.10	  0.00
GASPARM	p	  8.90	  8.24	  0.96	 18.10	  0.00
# d = a+b+c (except h)