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                9.9 +/-    1.02      19.7 +/-    1.02  0.040 / 0.070
G07     107.4          55.0                9.7 +/-    0.63      11.5 +/-    0.63  0.040 / 0.080
G08     42.3           23.4                6.8 +/-    1.69      13.7 +/-    1.69  0.040 / 0.070
G09     175.7          16.2                8.1 +/-    1.62      19.5 +/-    1.62  0.050 / 0.070
G11     90.4           43.5                9.0 +/-    0.51      12.4 +/-    0.51  0.040 / 0.050
G13     310.2          28.8                7.0 +/-    1.11      12.7 +/-    1.11  0.030 / 0.040
G17     205.0          34.1               10.0 +/-    1.28      16.2 +/-    1.28  0.110 / 0.090
G18     80.7           23.8                6.3 +/-    1.14      12.6 +/-    1.14  0.070 / 0.090
G28     304.0          58.1                7.8 +/-    0.99       9.0 +/-    0.99  0.080 / 0.140
G30     27.8           78.0                8.5 +/-    1.00       8.7 +/-    1.00  0.070 / 0.160