PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/10-17:28:10
G02     206.9          43.0                9.5 +/-    1.59      13.2 +/-    1.59  0.060 / 0.130
G06     134.5          77.3                8.6 +/-    0.41       8.8 +/-    0.41  0.070 / 0.140
G12     311.3          21.1                7.2 +/-    2.07      15.5 +/-    2.07  0.060 / 0.080
G17     41.9           44.7                7.4 +/-    1.31      10.0 +/-    1.31  0.060 / 0.070
G19     20.1           58.7                8.6 +/-    0.88       9.9 +/-    0.88  0.050 / 0.110
G24     286.9          41.1               13.8 +/-    3.31      19.7 +/-    3.31  0.060 / 0.120
G28     108.2          30.1                7.6 +/-    0.80      13.3 +/-    0.80  0.030 / 0.070