PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-14:42:50
G01     111.8          21.9               10.4 +/-    1.14      21.8 +/-    1.14  0.030 / 0.040
G07     101.0          58.0               11.0 +/-    0.54      12.8 +/-    0.54  0.040 / 0.040
G08     43.1           26.9                8.7 +/-    1.11      16.4 +/-    1.11  0.040 / 0.070
G09     176.5          20.3               10.8 +/-    1.07      23.6 +/-    1.07  0.040 / 0.070
G11     96.5           42.9               10.9 +/-    0.93      15.2 +/-    0.93  0.050 / 0.100
G13     313.3          25.8                9.2 +/-    1.19      17.6 +/-    1.19  0.040 / 0.080
G17     203.5          29.9               11.9 +/-    2.49      20.9 +/-    2.49  0.090 / 0.210
G18     85.4           23.0                7.5 +/-    0.81      15.4 +/-    0.81  0.090 / 0.210
G28     296.5          56.6                9.4 +/-    0.85      11.0 +/-    0.85  0.050 / 0.130
G30     11.7           75.7               10.9 +/-    1.10      11.2 +/-    1.10  0.070 / 0.120