PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-14:27:50
G01     107.6          24.4                8.2 +/-    1.17      16.2 +/-    1.17  0.040 / 0.050
G07     107.4          55.0                9.2 +/-    0.63      10.9 +/-    0.63  0.030 / 0.060
G08     42.3           23.4                5.2 +/-    1.68      10.5 +/-    1.68  0.050 / 0.070
G09     175.7          16.2                9.5 +/-    2.16      22.8 +/-    2.16  0.040 / 0.070
G11     90.4           43.5                9.3 +/-    0.36      12.9 +/-    0.36  0.040 / 0.080
G13     310.2          28.8                6.3 +/-    1.40      11.3 +/-    1.40  0.040 / 0.080
G17     205.0          34.1                9.6 +/-    1.38      15.6 +/-    1.38  0.080 / 0.190
G18     80.7           23.8                7.1 +/-    0.58      14.2 +/-    0.58  0.060 / 0.150
G28     304.0          58.1                7.6 +/-    0.55       8.8 +/-    0.55  0.060 / 0.110
G30     27.8           78.0                8.5 +/-    0.67       8.7 +/-    0.67  0.050 / 0.080