PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/11-07:12:40
G02     67.0           25.6                2.3 +/-    2.63       4.3 +/-    2.63  0.040 / 0.040
G05     49.6           52.5                3.2 +/-    0.66       3.9 +/-    0.66  0.040 / 0.030
G12     184.2          25.4                4.9 +/-    1.29       9.5 +/-    1.29  0.090 / 0.140
G13     122.5          20.4                7.5 +/-    2.06      16.3 +/-    2.06  0.130 / 0.110
G15     158.4          19.0                5.2 +/-    1.15      11.8 +/-    1.15  0.050 / 0.050
G20     216.6          61.5                5.0 +/-    0.99       5.6 +/-    0.99  0.070 / 0.070
G21     278.1          23.2                4.6 +/-    1.26       9.5 +/-    1.26  0.170 / 0.240
G25     228.0          46.1                4.4 +/-    2.23       5.8 +/-    2.23  0.110 / 0.210
G29     334.4          63.0                3.5 +/-    0.61       3.8 +/-    0.61  0.090 / 0.070