#Observations of the quasar 3C 273 extracted from "3C 273's Database" [ http://isdc.unige.ch/3c273/ ]
#====================================================================
#Date [UTC format]	Date [Year]	Frequency [Hz]	Wavelength [A]	Flux [Jy]	FluxError [Jy]	Flag	Observatory		Reference	Comments
#-----------------	-----------	--------------	--------------	---------	--------------	----	-----------		---------	--------
 1979-06-20		1979.46612	2.418e+16	1.240e+02	2.19e-05	2.83e-06	-3	HEAO2/IPC		MBC94		Free-N_H/Dubious
 1980-01-01		1980.00000	2.418e+16	1.240e+02	2.06e-05	3.72e-06	-3	HEAO2/IPC		MBC94		Free-N_H/Dubious
 1990-06-18		1990.46133	2.418e+16	1.240e+02	1.18e-04	4.54e-06	0	ROSAT/PSPC		SFC92		Fixed-N_H
 1990-12-18/1990-12-21	1990.96646	2.418e+16	1.240e+02	2.33e-04	1.08e-05	0	ROSAT/PSPC		SFC92		Fixed-N_H
 1991-12-14/1991-12-15	1991.95209	2.418e+16	1.240e+02	1.39e-04	2.42e-06	0	ROSAT/PSPC		BCS95		Fixed-N_H
 1992-12-15T01		1992.95562	2.418e+16	1.240e+02	3.02e-04	5.76e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1992-12-18T20		1992.96601	2.418e+16	1.240e+02	2.95e-04	5.95e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1992-12-18T23		1992.96635	2.418e+16	1.240e+02	2.91e-04	4.78e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1992-12-20T23		1992.97182	2.418e+16	1.240e+02	2.89e-04	5.90e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1992-12-22T23		1992.97730	2.418e+16	1.240e+02	2.33e-04	4.80e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1992-12-25T00		1992.98289	2.418e+16	1.240e+02	2.89e-04	5.25e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1992-12-24/1992-12-29	1992.98700	2.418e+16	1.240e+02	3.24e-04	6.63e-05	0	EUVE/DSS		RKF97		Fixed-N_H/MultiObs-Index
 1992-12-27T02		1992.98859	2.418e+16	1.240e+02	3.03e-04	5.40e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1992-12-29T00		1992.99384	2.418e+16	1.240e+02	3.03e-04	5.40e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1992-12-31T00		1992.99932	2.418e+16	1.240e+02	3.08e-04	5.06e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1993-01-02T03		1993.00513	2.418e+16	1.240e+02	2.67e-04	4.69e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1993-01-03T23		1993.01015	2.418e+16	1.240e+02	2.59e-04	4.07e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1993-01-05T23		1993.01563	2.418e+16	1.240e+02	2.31e-04	4.03e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1993-01-07T23		1993.02110	2.418e+16	1.240e+02	2.37e-04	4.05e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1993-01-09T23		1993.02658	2.418e+16	1.240e+02	2.31e-04	3.89e-06	0	ROSAT/PSPC		LMP95		Fixed-N_H
 1994-01-08/1994-01-14	1994.02875	2.418e+16	1.240e+02	4.68e-04	9.36e-05	0	EUVE/DSS		RKF97		Fixed-N_H/MultiObs-Index
 1995-01-03/1995-01-15	1995.02259	2.418e+16	1.240e+02	2.85e-04	5.85e-05	0	EUVE/DSS		RKF97		Fixed-N_H/MultiObs-Index