PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/28-13:57:40
G02     56.4           34.6                4.5 +/-    1.11       7.2 +/-    1.11  0.030 / 0.030
G05     70.7           68.3                4.7 +/-    0.63       5.0 +/-    0.63  0.030 / 0.040
G12     182.7          35.4                5.8 +/-    1.79       9.1 +/-    1.79  0.070 / 0.080
G13     129.8          12.1                9.6 +/-    2.29      25.5 +/-    2.29  0.060 / 0.090
G15     164.6          10.2               -8.4 +/-   16.18     -23.4 +/-   16.18  0.040 / 0.060
G21     268.3          14.3                3.5 +/-    1.98       8.9 +/-    1.98  0.040 / 0.060
G25     244.2          54.7                7.8 +/-    0.99       9.3 +/-    0.99  0.110 / 0.310
G29     325.2          49.6                5.2 +/-    1.01       6.5 +/-    1.01  0.090 / 0.250