PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-07:57:40
G10     242.4          20.3                6.4 +/-    4.52      13.9 +/-    4.52  0.040 / 0.040
G13     63.8           33.8                6.0 +/-    1.40       9.8 +/-    1.40  0.040 / 0.040
G15     105.9          56.7                6.7 +/-    0.64       7.9 +/-    0.64  0.090 / 0.100
G16     310.9          12.1                3.3 +/-    2.71       8.9 +/-    2.71  0.080 / 0.120
G20     257.6          44.1                7.3 +/-    3.57      10.0 +/-    3.57  0.160 / 0.300
G21     326.8          55.8                5.3 +/-    0.67       6.2 +/-    0.67  0.190 / 0.210
G29     156.7          56.0                8.2 +/-    0.83       9.7 +/-    0.83  0.170 / 0.290