PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-10:43:10
G01     74.0           32.4                4.0 +/-    0.92       6.7 +/-    0.92  0.050 / 0.040
G07     134.6          32.6                5.3 +/-    0.72       8.8 +/-    0.72  0.040 / 0.040
G11     56.9           35.0                3.5 +/-    1.20       5.5 +/-    1.20  0.040 / 0.090
G13     278.3          39.0                5.0 +/-    1.57       7.4 +/-    1.57  0.040 / 0.100
G15     307.0          13.6                1.4 +/-    1.47       3.7 +/-    1.47  0.170 / 0.260
G17     225.0          62.6                4.8 +/-    1.16       5.4 +/-    1.16  0.130 / 0.160
G18     51.5           19.8                2.9 +/-    3.04       6.5 +/-    3.04  0.030 / 0.020
G19     220.3          40.2                3.9 +/-    1.38       5.6 +/-    1.38  0.030 / 0.030
G28     357.5          61.5                3.8 +/-    0.85       4.3 +/-    0.85  0.070 / 0.090
G30     130.9          67.1                4.8 +/-    0.56       5.2 +/-    0.56  0.080 / 0.070