PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-19:12:30
G02     205.4          39.5               11.9 +/-    0.98      17.4 +/-    0.98  0.230 / 0.170
G06     142.0          75.2               10.1 +/-    0.80      10.5 +/-    0.80  0.110 / 0.160
G12     311.2          21.8                8.7 +/-    2.02      18.3 +/-    2.02  0.110 / 0.090
G17     40.1           46.1                9.8 +/-    1.11      13.0 +/-    1.11  0.060 / 0.080
G19     7.0            63.1                9.8 +/-    0.53      10.9 +/-    0.53  0.090 / 0.070
G24     290.5          41.0                5.7 +/-    5.67       8.2 +/-    5.67  0.030 / 0.050
G28     107.7          27.5               10.7 +/-    0.64      19.7 +/-    0.64  0.060 / 0.050