PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-10:57:40
G02     206.2          42.8                6.3 +/-    1.21       8.7 +/-    1.21  0.060 / 0.070
G06     133.4          76.8                5.3 +/-    0.71       5.5 +/-    0.71  0.050 / 0.070
G12     311.7          23.5                3.3 +/-    2.20       6.7 +/-    2.20  0.050 / 0.080
G17     42.3           44.0                4.2 +/-    0.28       5.7 +/-    0.28  0.060 / 0.080
G19     19.9           58.8                5.9 +/-    0.92       6.7 +/-    0.92  0.060 / 0.120
G24     289.3          40.1                3.0 +/-    1.06       4.3 +/-    1.06  0.060 / 0.150
G28     106.5          32.4                6.1 +/-    0.88      10.2 +/-    0.88  0.080 / 0.130