PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-02:42:50
G02     35.8           53.2                8.9 +/-    0.65      10.8 +/-    0.65  0.030 / 0.040
G05     132.7          63.7               12.6 +/-    0.73      13.9 +/-    0.73  0.020 / 0.040
G06     54.7           14.7                6.6 +/-    3.49      16.6 +/-    3.49  0.030 / 0.040
G12     197.9          66.4               11.3 +/-    0.86      12.3 +/-    0.86  0.030 / 0.040
G25     295.8          53.6               11.0 +/-    0.64      13.3 +/-    0.64  0.040 / 0.060
G29     308.1          28.6                6.7 +/-    1.48      12.1 +/-    1.48  0.030 / 0.060