PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-21:58:10
G01     82.5           32.7                9.0 +/-    1.03      14.9 +/-    1.03  0.050 / 0.090
G07     130.9          35.0               12.0 +/-    0.81      19.1 +/-    0.81  0.040 / 0.070
G11     60.5           36.2               10.1 +/-    0.89      15.7 +/-    0.89  0.110 / 0.100
G13     286.6          38.1               13.7 +/-    1.14      20.6 +/-    1.14  0.130 / 0.130
G15     310.4          12.8                8.5 +/-    1.54      22.2 +/-    1.54  0.060 / 0.110
G17     218.7          61.3               12.8 +/-    1.07      14.4 +/-    1.07  0.060 / 0.110
G18     55.2           20.7               10.0 +/-    2.60      21.6 +/-    2.60  0.040 / 0.040
G19     217.1          32.5               12.4 +/-    1.75      20.7 +/-    1.75  0.050 / 0.040
G28     352.6          61.6                9.5 +/-    0.62      10.7 +/-    0.62  0.030 / 0.030
G30     121.3          70.6               12.1 +/-    0.93      12.8 +/-    0.93  0.030 / 0.030