PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-02:12:30
G10     298.4          52.2               10.2 +/-    1.96      12.5 +/-    1.96  0.060 / 0.080
G15     46.3           29.7                9.0 +/-    1.54      15.8 +/-    1.54  0.090 / 0.090
G20     318.3          60.4               11.3 +/-    0.38      12.8 +/-    0.38  0.040 / 0.030
G21     96.6           74.6               12.2 +/-    0.40      12.6 +/-    0.40  0.040 / 0.030
G24     95.5           26.6               11.2 +/-    1.38      21.2 +/-    1.38  0.080 / 0.120
G27     299.8          34.5                9.3 +/-    1.30      14.9 +/-    1.30  0.080 / 0.110
G32     210.5          34.5               14.0 +/-    1.74      22.4 +/-    1.74  0.060 / 0.140