PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-16:27:50
G02     60.7           31.9                6.7 +/-    0.56      11.3 +/-    0.56  0.030 / 0.030
G05     56.4           61.5                8.0 +/-    0.55       9.0 +/-    0.55  0.020 / 0.030
G12     182.8          29.6                9.6 +/-    1.41      17.0 +/-    1.41  0.130 / 0.310
G13     124.7          16.5               10.5 +/-    1.43      25.2 +/-    1.43  0.150 / 0.310
G15     162.4          14.5               11.6 +/-    1.34      29.2 +/-    1.34  0.060 / 0.120
G21     273.4          18.0                8.2 +/-    1.50      18.9 +/-    1.50  0.050 / 0.150
G25     234.5          50.5                8.4 +/-    0.68      10.5 +/-    0.68  0.120 / 0.310
G29     329.9          56.1                5.8 +/-    1.36       6.8 +/-    1.36  0.090 / 0.310