PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-21:43:00
G02     16.8           67.2                8.1 +/-    1.87       8.7 +/-    1.87  0.090 / 0.460
G05     154.7          49.4               12.9 +/-    2.74      16.4 +/-    2.74  0.090 / 0.370
G06     47.4           25.3                9.5 +/-    0.95      18.4 +/-    0.95  0.030 / 0.050
G12     229.1          79.6                8.6 +/-    2.00       8.8 +/-    2.00  0.030 / 0.050
G19     87.7           20.1               10.4 +/-    1.75      22.9 +/-    1.75  0.030 / 0.030
G24     216.6          11.8               14.1 +/-    4.04      37.7 +/-    4.04  0.020 / 0.030
G25     311.3          42.8                8.3 +/-    2.63      11.5 +/-    2.63  0.060 / 0.100
G29     297.0          17.3                9.7 +/-    3.26      22.8 +/-    3.26  0.050 / 0.110