PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-02:57:40
G08     297.1          21.8               10.3 +/-    1.36      21.7 +/-    1.36  0.060 / 0.090
G10     8.7            62.7                6.5 +/-    0.69       7.3 +/-    0.69  0.070 / 0.100
G14     228.3          45.0               11.7 +/-    2.10      15.8 +/-    2.10  0.030 / 0.030
G20     63.7           53.0                7.7 +/-    0.99       9.3 +/-    0.99  0.040 / 0.030
G21     146.3          42.0                9.1 +/-    0.74      12.9 +/-    0.74  0.050 / 0.070
G24     57.4           26.2                7.5 +/-    1.25      14.2 +/-    1.25  0.050 / 0.090
G27     256.2          32.5                8.2 +/-    2.57      13.6 +/-    2.57  0.120 / 0.110
G32     242.2          65.5                9.4 +/-    0.82      10.2 +/-    0.82  0.120 / 0.110