PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-08:58:30
G07     348.7          63.0                3.7 +/-    0.92       4.1 +/-    0.92  0.040 / 0.050
G08     94.5           54.0                4.2 +/-    0.67       5.0 +/-    0.67  0.030 / 0.040
G09     184.3          66.9                3.8 +/-    1.01       4.0 +/-    1.01  0.050 / 0.090
G11     142.2          18.0                3.3 +/-    1.61       7.7 +/-    1.61  0.050 / 0.080
G23     156.5          32.5                5.3 +/-    1.01       8.8 +/-    1.01  0.080 / 0.230
G27     49.9           28.4                1.7 +/-    0.63       3.1 +/-    0.63  0.090 / 0.160
G28     240.2          28.2                6.8 +/-    2.87      12.3 +/-    2.87  0.070 / 0.090
G30     306.8          39.3                3.7 +/-    1.04       5.5 +/-    1.04  0.050 / 0.110