PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-14:12:50
G01     115.7          19.3               10.0 +/-    1.02      22.3 +/-    1.02  0.040 / 0.050
G07     93.2           61.1                9.1 +/-    0.59      10.3 +/-    0.59  0.030 / 0.050
G08     44.4           30.8                7.0 +/-    0.73      12.1 +/-    0.73  0.050 / 0.070
G09     177.1          24.4                9.3 +/-    2.57      18.5 +/-    2.57  0.040 / 0.050
G11     102.5          41.8               10.1 +/-    1.01      14.3 +/-    1.01  0.060 / 0.090
G13     315.8          22.6                3.9 +/-    2.60       8.0 +/-    2.60  0.070 / 0.100
G17     202.3          25.3                9.4 +/-    2.14      18.2 +/-    2.14  0.160 / 0.230
G18     90.0           21.7                8.1 +/-    1.00      17.1 +/-    1.00  0.090 / 0.170
G28     289.0          54.8                9.3 +/-    0.70      11.1 +/-    0.70  0.050 / 0.160
G30     358.1          72.6                7.8 +/-    0.94       8.1 +/-    0.94  0.080 / 0.160