Object	UT Date	UT	JD	Comp Star	ΔV	σ(ΔV)	V	σ(V)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
Mrk 501	2017-10-19	01:52:40	2458045.57824	A	1.292	0.003	13.90	0.01
PG1553+113	2017-10-19	02:20:53	2458045.59784	A	0.127	0.007
PKS2023-07	2017-10-19	03:00:26	2458045.62530	A	5.728	0.031
PKS2155-304	2017-10-19	03:20:57	2458045.63955	2	1.626	0.004	13.67	0.01
BL Lac	2017-10-19	03:38:41	2458045.65186	B	1.080	0.002	14.02	0.01
TXS0506+056	2017-10-19	08:15:15	2458045.84392	A	0.215	0.005
S4 1030+61	2017-10-19	10:13:25	2458045.92598	A	3.194	0.011