PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-10:28:20
G10     306.9          54.5                3.5 +/-    0.99       4.2 +/-    0.99  0.310 / 0.310
G14     212.6          15.4                3.3 +/-    2.30       8.2 +/-    2.30  0.340 / 0.270
G15     45.5           21.3                2.7 +/-    2.71       5.8 +/-    2.71  0.030 / 0.040
G20     70.5           26.3                3.1 +/-    1.36       5.9 +/-    1.36  0.030 / 0.040
G21     114.6          68.5                5.3 +/-    0.89       5.7 +/-    0.89  0.080 / 0.080
G24     90.7           28.7                5.1 +/-    0.79       9.2 +/-    0.79  0.060 / 0.080
G27     292.0          36.9                8.9 +/-    1.93      13.6 +/-    1.93  0.100 / 0.130
G32     213.6          39.7                5.7 +/-    1.28       8.3 +/-    1.28  0.070 / 0.130