PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-02:57:30
G02     347.5          78.8                6.1 +/-    0.99       6.2 +/-    0.99  0.020 / 0.040
G05     163.4          33.4               10.4 +/-    1.30      17.0 +/-    1.30  0.030 / 0.040
G06     41.2           41.8                4.3 +/-    0.60       6.1 +/-    0.60  0.040 / 0.100
G12     313.3          69.3                6.2 +/-    1.10       6.6 +/-    1.10  0.060 / 0.090
G17     83.8           15.3                5.2 +/-    1.64      12.9 +/-    1.64  0.040 / 0.030
G19     73.8           28.4                5.2 +/-    0.77       9.5 +/-    0.77  0.040 / 0.040
G24     229.6          23.6               11.4 +/-    1.64      23.0 +/-    1.64  0.060 / 0.200
G25     317.5          26.9                4.0 +/-    1.03       7.4 +/-    1.03  0.070 / 0.170