PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/12-19:13:10
G02     55.0           36.8                6.6 +/-    1.30      10.2 +/-    1.30  0.070 / 0.080
G05     64.8           64.7                8.4 +/-    0.48       9.1 +/-    0.48  0.060 / 0.080
G12     185.3          37.5                9.9 +/-    0.76      15.0 +/-    0.76  0.230 / 0.420
G13     129.7          12.4               12.8 +/-    2.71      33.8 +/-    2.71  0.120 / 0.420
G21     268.3          14.1                9.1 +/-    1.61      23.1 +/-    1.61  0.220 / 0.420
G25     244.3          54.5                8.2 +/-    1.27       9.9 +/-    1.27  0.170 / 0.350
G29     326.3          51.0                7.8 +/-    0.90       9.8 +/-    0.90  0.050 / 0.090