PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-02:57:50
G02     38.5           50.8                8.4 +/-    1.04      10.5 +/-    1.04  0.090 / 0.130
G05     125.8          65.8                8.9 +/-    0.48       9.7 +/-    0.48  0.110 / 0.130
G06     56.4           12.5                5.5 +/-    1.10      14.6 +/-    1.10  0.030 / 0.030
G12     195.1          63.1                9.4 +/-    0.47      10.4 +/-    0.47  0.030 / 0.040
G25     290.9          55.2                9.1 +/-    0.93      10.8 +/-    0.93  0.030 / 0.030
G29     310.3          30.9                9.4 +/-    1.80      16.2 +/-    1.80  0.030 / 0.070