--- a/test-data/123_combined_matrix.tabular	Tue Jun 19 18:07:04 2018 -0400
+++ b/test-data/123_combined_matrix.tabular	Fri Jul 06 14:13:08 2018 -0400
@@ -1,4 +1,4 @@
-	x = 1, y = 1	x = 1, y = 2	x = 1, y = 3	x = 3, y = 1	x = 4, y = 1	x = 3, y = 2	x = 4, y = 2	x = 3, y = 3	x = 4, y = 3	x = 9, y = 1	x = 9, y = 2	x = 9, y = 3
+mz | spectra	x = 1, y = 1	x = 1, y = 2	x = 1, y = 3	x = 3, y = 1	x = 4, y = 1	x = 3, y = 2	x = 4, y = 2	x = 3, y = 3	x = 4, y = 3	x = 9, y = 1	x = 9, y = 2	x = 9, y = 3
 100.083335876465	0	0	0	0	0	0	0	0	0	0	0	0
 100.166664123535	0	0	0	0	0	0	0	0	0	0	0	0
 100.25	0	0	0	0	0	0	0	0	0	0	0	0
@@ -360,7 +360,7 @@
 129.91667175293	0	1.94567542632917e-10	1.59268598309836e-09	0	5.13584648548097e-22	0	0.285675346851349	6.18760043202826e-11	0	5.13584648548097e-22	0.285675346851349	0
 130	0	2.69103206385068e-09	2.6957396315197e-09	0	8.40260872994678e-23	0	0.0922771617770195	0	0	8.40260872994678e-23	0.0922771617770195	0
 130.08332824707	0	6.79609923892599e-10	6.08401329316166e-10	0	0	1.82470871745721e-09	0.00885347183793783	0.00702123576775193	1.43794914539954e-38	0	0.00885347183793783	1.43794914539954e-38
-130.16667175293	3.95536225994420e-09	3.47967765712554e-11	1.6302821939651e-11	3.29609384230878e-09	0	1.25451604660043e-09	0	0.231073617935181	0	0	0	0
+130.16667175293	3.9553622599442e-09	3.47967765712554e-11	1.6302821939651e-11	3.29609384230878e-09	0	1.25451604660043e-09	0	0.231073617935181	0	0	0	0
 130.25	1.24890042751957e-09	0	0	9.79382352994662e-10	0	2.27010202302758e-10	0	0.324241071939468	0	0	0	0
 130.33332824707	1.15216870766321e-10	0	0	8.02890184892213e-11	0	0	0	0.0853684470057487	0	0	0	0
 130.41667175293	0	0	0	0	5.85355437642995e-26	0	1.80171464307932e-05	0.00508514558896422	0	5.85355437642995e-26	1.80171464307932e-05	0
@@ -794,7 +794,7 @@
 166.08332824707	0	0	0.319614619016647	2.57848675744299e-09	0.0693006962537766	0	0	4.62811399113267e-18	0	0.0693006962537766	0	0
 166.16667175293	0	1.14715126287024e-09	0.0724143385887146	6.56307730384498e-10	0.62439638376236	0	0	6.8736165322773e-19	0	0.62439638376236	0	0
 166.25	0	3.14622244923513e-10	0.00200480571947992	3.46551710939114e-11	0.351666212081909	0	0	0	0	0.351666212081909	0	0
-166.33332824707	0	2.12185061188030e-11	0	0	0.0523218922317028	0	0	0	2.5666432422075e-34	0.0523218922317028	0	2.5666432422075e-34
+166.33332824707	0	2.1218506118803e-11	0	0	0.0523218922317028	0	0	0	2.5666432422075e-34	0.0523218922317028	0	2.5666432422075e-34
 166.41667175293	0	0	0	0	0	0	0	0	1.79175357793123e-34	0	0	1.79175357793123e-34
 166.5	0	0	0	0	0	0	0	1.22833481064866e-22	3.2627696766292e-35	0	0	3.2627696766292e-35
 166.58332824707	0	0	3.00022511510178e-05	2.19008174768241e-13	0	0	0	5.49785513354013e-22	0	0	0	0
@@ -1966,7 +1966,7 @@
 263.75	2.63480720471276e-30	0	4.1755133465381e-23	8.50994199119877e-36	0	9.20938646231662e-07	0	0	0	0	0	0
 263.833343505859	3.01601969354601e-31	1.17162197196341e-21	0	0	0	0	0	0.038629338145256	2.08870987172816e-09	0	0	2.08870987172816e-09
 263.916656494141	0	5.18109302264956e-22	0	0	0	0	0	0.422133505344391	6.11632078317825e-10	0	0	6.11632078317825e-10
-264	0	7.21028586138357e-23	0	0	0	0	1.77109493838301e-17	0.321338444948196	4.85728748889080e-11	0	1.77109493838301e-17	4.85728748889080e-11
+264	0	7.21028586138357e-23	0	0	0	0	1.77109493838301e-17	0.321338444948196	4.8572874888908e-11	0	1.77109493838301e-17	4.8572874888908e-11
 264.083343505859	0	0	0	2.12008540316021e-38	0	1.39839351209758e-09	4.7550163183978e-18	0.29814937710762	0	0	4.7550163183978e-18	0
 264.166656494141	3.57819194693358e-34	0	3.05432367063757e-26	1.33085785299029e-38	0	1.14420406482907e-09	3.01339363912442e-19	0.143617242574692	0	0	3.01339363912442e-19	0
 264.25	3.4164795105152e-34	0	7.88911364585555e-27	0	0	2.2081882156133e-10	0	0.02104945294559	0	0	0	0
@@ -6926,7 +6926,7 @@
 677.083374023438	0	0	0	0	7.30603211826078e-23	1.47505618830479e-09	0.0081722866743803	0	0	7.30603211826078e-23	0.0081722866743803	0
 677.166687011719	0	1.26987231841014e-09	9.69976057235506e-18	0	0	3.15919790327968e-10	0.306170374155045	0	0	0	0.306170374155045	0
 677.25	8.39507946281412e-22	6.14907513796226e-10	7.10216281321294e-18	0	0	4.56711187965531e-12	0.433688700199127	0	0	0	0.433688700199127	0
-677.333374023438	7.26906016400812e-22	9.18221887413750e-11	1.3178190705761e-18	0	0	0	0.121825225651264	0	1.60062588412301e-38	0	0.121825225651264	1.60062588412301e-38
+677.333374023438	7.26906016400812e-22	9.1822188741375e-11	1.3178190705761e-18	0	0	0	0.121825225651264	0	1.60062588412301e-38	0	0.121825225651264	1.60062588412301e-38
 677.416687011719	1.42817839527236e-22	0	0.0119308065623045	0	0	0	0.00875996984541416	1.28492006173211e-25	0	0	0.00875996984541416	0
 677.5	0	0	0.297131985425949	0	5.35820581103113e-26	0	0	3.49355402709364e-26	0	5.35820581103113e-26	0	0
 677.583374023438	0	0	0.361047953367233	0	1.38180989944874e-26	1.44302172750028e-13	0	2.29867192211501e-27	0	1.38180989944874e-26	0	0
@@ -7061,7 +7061,7 @@
 688.333374023438	0	7.61132855468166e-30	0	6.68223207886745e-14	1.18118812257248e-13	0.287733644247055	0	0	0	1.18118812257248e-13	0	0
 688.416687011719	0	4.11288997623897e-30	0	6.69271351866666e-15	1.37688771584894e-14	0.156375765800476	0	0	0	1.37688771584894e-14	0	0
 688.5	0	6.59867280317144e-31	0	0	0	0.0225699674338102	0	0	0	0	0	0
-688.583374023438	0	0	1.99697860764491e-17	0	0	0	0	1.60386848246930e-09	0	0	0	0
+688.583374023438	0	0	1.99697860764491e-17	0	0	0	0	1.6038684824693e-09	0	0	0	0
 688.666687011719	0	0	8.9694701064922e-18	0	0	0	0	6.4029098689744e-10	0	0	0	0
 688.75	0	0	1.26445940701911e-18	1.21439221181329e-17	1.52452447461789e-17	0	0	8.10332217993093e-11	0	1.52452447461789e-17	0	0
 688.833374023438	0	0	0	8.97011199864754e-18	1.52370258796126e-17	6.25170878265635e-06	0	0	0	1.52370258796126e-17	0	0
@@ -7285,11 +7285,11 @@
 707	0	0	1.90136440834245e-34	0	0	5.59408872504719e-05	0	3.3411272837961e-16	0	0	0	0
 707.083374023438	0	0	1.07956551701179e-34	0	0	4.78216497867834e-05	0	0	0	0	0	0
 707.166687011719	0	1.44754397357616e-09	1.78201528452145e-35	0	0	9.35875232244143e-06	3.66076603820446e-26	0	0	0	3.66076603820446e-26	0
-707.25	0	1.44369982635340e-09	0	0	0	0	2.11649639830128e-26	0	0	0	2.11649639830128e-26	0
+707.25	0	1.4436998263534e-09	0	0	0	0	2.11649639830128e-26	0	0	0	2.11649639830128e-26	0
 707.333374023438	0	2.95030971875221e-10	0	0	0	0	3.52831752481302e-27	1.35318104176274e-17	0	0	3.52831752481302e-27	0
 707.416687011719	0	8.37653676890454e-13	0	0	0	0	0	4.7182009908749e-18	0	0	0	0
 707.5	0	0	0	0	0	0	0	5.0838644524601e-19	0	0	0	0
-707.583374023438	0	0	1.22540327718737e-38	0	0	4.96039964659190e-09	0	0	0	0	0	0
+707.583374023438	0	0	1.22540327718737e-38	0	0	4.9603996465919e-09	0	0	0	0	0	0
 707.666687011719	0	0	0	0	0	1.58059820787315e-09	0	0	0	0	0	0
 707.75	0	1.45760302699277e-13	0	0	0	1.4816918525451e-10	2.39135122799079e-30	0	0	0	2.39135122799079e-30	0
 707.833374023438	0	4.87719673675224e-14	0	0	0	0	6.47778684492383e-31	7.42344819487779e-22	0	0	6.47778684492383e-31	0
@@ -7410,7 +7410,7 @@
 717.416687011719	0	0	2.87730783643525e-10	0	0	0.00435880431905389	0	1.18917693075517e-13	0.0155197065323591	0	0	0.0155197065323591
 717.5	0	0	0	0	1.90891480400524e-09	0.302602857351303	0	4.75057242621448e-14	0.239752173423767	1.90891480400524e-09	0	0.239752173423767
 717.583374023438	1.04398098239172e-14	0	0	0	6.93524460082529e-10	0.280596673488617	0	6.01629291226364e-15	0.265576779842377	6.93524460082529e-10	0	0.265576779842377
-717.666687011719	5.57169158629366e-14	4.45572581888228e-30	0	0	7.88731371881290e-11	0.0627823546528816	0	0	0.0709678903222084	7.88731371881290e-11	0	0.0709678903222084
+717.666687011719	5.57169158629366e-14	4.45572581888228e-30	0	0	7.8873137188129e-11	0.0627823546528816	0	0	0.0709678903222084	7.8873137188129e-11	0	0.0709678903222084
 717.75	1.37390514343507e-14	1.24232139274563e-30	2.21830393680802e-13	0	0	0.00155708997044712	0	0	0.0044330176897347	0	0	0.0044330176897347
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 717.916687011719	0	0	6.19216659826678e-14	0	0	0	0	4.59384968861889e-18	0	0	0	0