PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-08:42:30
G10     301.2          53.5                5.5 +/-    1.46       6.7 +/-    1.46  0.030 / 0.030
G14     210.2          14.1                3.5 +/-    2.03       8.8 +/-    2.03  0.030 / 0.040
G15     45.7           25.4                4.8 +/-    2.13       9.2 +/-    2.13  0.100 / 0.030
G20     357.6          65.1                5.7 +/-    0.56       6.2 +/-    0.56  0.060 / 0.030
G21     105.6          70.4                7.8 +/-    0.81       8.2 +/-    0.81  0.110 / 0.190
G24     94.0           27.0                4.9 +/-    1.42       9.1 +/-    1.42  0.120 / 0.190
G27     300.3          33.9                4.0 +/-    2.79       6.5 +/-    2.79  0.190 / 0.530
G32     212.0          29.0                7.9 +/-    1.74      14.2 +/-    1.74  0.150 / 0.450