PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-15:28:10
G02     220.8          61.7                9.1 +/-    1.20      10.2 +/-    1.20  0.080 / 0.090
G06     49.0           69.7                8.8 +/-    0.53       9.3 +/-    0.53  0.080 / 0.080
G12     319.2          39.6                6.8 +/-    0.65      10.0 +/-    0.65  0.060 / 0.070
G17     58.5           32.4                6.1 +/-    1.97      10.2 +/-    1.97  0.050 / 0.070
G19     45.4           44.9                7.8 +/-    1.18      10.5 +/-    1.18  0.030 / 0.020
G24     260.7          40.0               10.7 +/-    3.43      15.6 +/-    3.43  0.030 / 0.030
G28     123.7          16.3                7.4 +/-    1.56      17.9 +/-    1.56  0.050 / 0.040