PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-14:42:50
G01     121.5          16.1               10.6 +/-    2.25      25.6 +/-    2.25  0.040 / 0.060
G07     72.8           67.9                9.5 +/-    0.86      10.2 +/-    0.86  0.040 / 0.060
G08     46.3           34.1                8.2 +/-    0.47      13.3 +/-    0.47  0.030 / 0.040
G09     176.5          27.8               11.8 +/-    1.35      21.7 +/-    1.35  0.030 / 0.050
G11     110.1          38.8               11.7 +/-    0.72      17.3 +/-    0.72  0.090 / 0.210
G13     318.9          17.3                7.7 +/-    1.01      18.2 +/-    1.01  0.160 / 0.240
G17     201.3          21.0               10.9 +/-    0.75      23.4 +/-    0.75  0.030 / 0.040
G18     97.0           19.7               10.4 +/-    0.86      23.1 +/-    0.86  0.030 / 0.040
G28     287.6          56.2               11.2 +/-    0.79      13.1 +/-    0.79  0.050 / 0.110
G30     341.3          66.0                9.5 +/-    0.56      10.3 +/-    0.56  0.040 / 0.100