PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/04-06:28:10
G10     305.1          54.6                3.5 +/-    1.54       4.2 +/-    1.54  0.060 / 0.080
G14     210.9          16.0                5.3 +/-    1.79      12.9 +/-    1.79  0.090 / 0.100
G15     45.6           23.1                2.2 +/-    0.71       4.6 +/-    0.71  0.040 / 0.040
G20     3.0            64.9                3.6 +/-    0.74       3.9 +/-    0.74  0.040 / 0.040
G21     109.5          70.1                4.8 +/-    0.38       5.0 +/-    0.38  0.030 / 0.040
G24     92.2           27.8                6.0 +/-    1.68      11.0 +/-    1.68  0.030 / 0.040
G27     297.3          35.1                4.9 +/-    1.00       7.8 +/-    1.00  0.140 / 0.520
G32     212.9          31.9                3.5 +/-    1.68       5.9 +/-    1.68  0.220 / 0.340