PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-16:57:30
G02     54.8           36.8                7.7 +/-    0.26      11.8 +/-    0.26  0.040 / 0.060
G05     67.4           66.3                8.4 +/-    0.41       9.1 +/-    0.41  0.060 / 0.080
G12     184.4          37.0                9.7 +/-    1.09      14.9 +/-    1.09  0.140 / 0.310
G13     129.9          12.1                8.5 +/-   13.76      22.6 +/-   13.76  0.100 / 0.250
G21     268.0          13.8                7.4 +/-    3.26      19.0 +/-    3.26  0.090 / 0.460
G25     245.0          54.7                8.9 +/-    0.45      10.7 +/-    0.45  0.100 / 0.510
G29     325.5          50.0                7.8 +/-    1.08       9.9 +/-    1.08  0.070 / 0.090