PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-07:57:50
G08     321.3          10.4              -16.0 +/-   16.34     -44.2 +/-   16.34  0.030 / 0.030
G10     304.2          54.3                4.0 +/-    1.03       4.8 +/-    1.03  0.030 / 0.030
G14     210.8          15.7                5.1 +/-    2.44      12.5 +/-    2.44  0.220 / 0.370
G15     45.6           23.6                1.9 +/-    2.41       3.9 +/-    2.41  0.120 / 0.280
G20     2.0            64.9                4.4 +/-    0.73       4.8 +/-    0.73  0.120 / 0.170
G21     109.3          69.6                5.6 +/-    0.95       6.0 +/-    0.95  0.100 / 0.160
G24     92.2           27.6                5.6 +/-    1.75      10.3 +/-    1.75  0.050 / 0.040
G27     298.1          34.8                4.8 +/-    3.50       7.7 +/-    3.50  0.040 / 0.030
G32     212.9          30.2                5.8 +/-    2.10      10.1 +/-    2.10  0.080 / 0.110