PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-16:12:50
G01     55.0           28.1                7.6 +/-    1.04      13.8 +/-    1.04  0.110 / 0.240
G06     178.8          18.4               -6.3 +/-   42.82     -14.5 +/-   42.82  0.120 / 0.340
G07     143.2          14.3               10.8 +/-    2.01      27.4 +/-    2.01  0.040 / 0.050
G11     46.2           20.4                6.9 +/-    0.70      15.0 +/-    0.70  0.030 / 0.050
G13     256.2          34.3               11.1 +/-    1.34      17.9 +/-    1.34  0.080 / 0.240
G15     289.3          16.4                8.4 +/-    1.81      20.2 +/-    1.81  0.100 / 0.270
G17     269.7          77.1               11.8 +/-    1.16      12.1 +/-    1.16  0.050 / 0.090
G19     237.0          55.7               11.8 +/-    0.88      14.0 +/-    0.88  0.050 / 0.100
G28     33.4           58.2               10.2 +/-    0.52      11.7 +/-    0.52  0.030 / 0.030
G30     146.0          45.7               11.5 +/-    1.14      15.3 +/-    1.14  0.030 / 0.040