PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-02:57:30
G10     274.1          42.1               10.1 +/-    1.13      14.3 +/-    1.13  0.140 / 0.110
G13     39.4           13.4                6.4 +/-    1.94      16.6 +/-    1.94  0.090 / 0.150
G15     54.2           45.1                9.2 +/-    0.96      12.3 +/-    0.96  0.040 / 0.030
G20     304.4          60.8               11.3 +/-    0.67      12.8 +/-    0.67  0.040 / 0.030
G21     18.4           75.2               10.7 +/-    0.90      11.0 +/-    0.90  0.110 / 0.300
G24     114.1          17.9               11.7 +/-    0.93      27.1 +/-    0.93  0.150 / 0.370
G27     315.3          23.7                6.2 +/-    1.31      12.4 +/-    1.31  0.040 / 0.060
G29     168.9          25.4               10.9 +/-    1.76      21.0 +/-    1.76  0.040 / 0.040
G32     204.9          16.6               11.7 +/-    3.03      28.0 +/-    3.03  0.110 / 0.160