PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/19-22:28:00
G01     75.4           33.0                9.6 +/-    1.43      15.8 +/-    1.43  0.080 / 0.100
G07     134.7          29.9               10.5 +/-    1.79      18.4 +/-    1.79  0.070 / 0.090
G11     55.5           32.6                9.0 +/-    1.63      15.0 +/-    1.63  0.040 / 0.050
G13     279.1          38.5               12.4 +/-    1.23      18.5 +/-    1.23  0.040 / 0.040
G15     305.6          14.6                6.2 +/-    2.75      15.6 +/-    2.75  0.100 / 0.090
G17     226.0          67.1               12.5 +/-    0.83      13.4 +/-    0.83  0.090 / 0.110
G18     50.0           18.3                8.4 +/-    3.70      19.3 +/-    3.70  0.030 / 0.030
G19     220.6          37.9               12.1 +/-    1.88      18.3 +/-    1.88  0.030 / 0.030
G28     4.2            61.1               10.2 +/-    0.89      11.4 +/-    0.89  0.060 / 0.090
G30     130.8          65.3               11.7 +/-    0.46      12.8 +/-    0.46  0.060 / 0.090