PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-07:12:30
G10     304.3          54.4                5.0 +/-    1.81       5.9 +/-    1.81  0.070 / 0.070
G14     210.8          15.7                5.5 +/-    3.83      13.5 +/-    3.83  0.090 / 0.080
G15     45.6           23.5                1.8 +/-    1.30       3.7 +/-    1.30  0.030 / 0.050
G20     2.0            64.9                3.7 +/-    1.05       4.0 +/-    1.05  0.030 / 0.040
G21     108.9          70.0                5.2 +/-    1.26       5.5 +/-    1.26  0.050 / 0.040
G24     92.5           27.6                6.4 +/-    2.53      11.9 +/-    2.53  0.040 / 0.040
G27     298.0          34.9                5.4 +/-    0.89       8.6 +/-    0.89  0.080 / 0.120
G32     212.8          31.0                5.3 +/-    2.34       9.0 +/-    2.34  0.080 / 0.130