PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-02:42:50
G02     38.8           50.1                5.4 +/-    1.39       6.8 +/-    1.39  0.030 / 0.030
G05     124.2          66.4                8.2 +/-    0.45       8.8 +/-    0.45  0.040 / 0.040
G06     55.6           14.6                4.2 +/-    2.82      10.5 +/-    2.82  0.030 / 0.030
G12     197.8          64.0                7.6 +/-    0.64       8.4 +/-    0.64  0.020 / 0.020
G25     286.2          57.3                9.1 +/-    4.09      10.7 +/-    4.09  0.130 / 0.200
G29     313.7          36.4                6.5 +/-    0.99      10.1 +/-    0.99  0.130 / 0.240