PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-07:13:00
G07     332.0          58.1                4.4 +/-    0.55       5.1 +/-    0.55  0.030 / 0.040
G08     108.5          51.1                6.9 +/-    0.72       8.6 +/-    0.72  0.030 / 0.050
G09     192.9          76.2                4.7 +/-    0.52       4.8 +/-    0.52  0.060 / 0.070
G11     148.5          12.0                4.9 +/-    4.21      13.0 +/-    4.21  0.060 / 0.080
G23     153.9          43.0              -12.9 +/-    0.64     -17.9 +/-    0.64  0.030 / 0.020
G27     58.4           33.2                4.6 +/-    1.50       7.6 +/-    1.50  0.030 / 0.020
G28     233.3          20.6                5.2 +/-    3.44      11.4 +/-    3.44  0.040 / 0.040
G30     299.0          32.3                4.6 +/-    1.42       7.7 +/-    1.42  0.050 / 0.040