PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-18:27:40
G05     48.4           18.5                8.4 +/-    1.94      19.2 +/-    1.94  0.060 / 0.070
G10     236.2          14.4               11.1 +/-    2.51      28.0 +/-    2.51  0.040 / 0.080
G13     74.1           35.2               10.3 +/-    1.00      16.3 +/-    1.00  0.070 / 0.100
G15     123.8          52.8               11.5 +/-    0.79      14.0 +/-    0.79  0.090 / 0.130
G16     313.3          12.9                6.8 +/-    2.66      17.7 +/-    2.66  0.040 / 0.050
G20     249.2          38.5               10.4 +/-    0.84      15.5 +/-    0.84  0.030 / 0.040
G21     313.5          46.5                9.7 +/-    0.76      12.8 +/-    0.76  0.130 / 0.350
G25     199.8          11.5               10.9 +/-    1.93      29.3 +/-    1.93  0.100 / 0.300
G26     287.1          20.1                7.2 +/-    1.79      15.7 +/-    1.79  0.070 / 0.200
G29     153.5          72.8               10.8 +/-    0.57      11.2 +/-    0.57  0.070 / 0.160