PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/03-22:43:10
G02     51.7           39.6                7.4 +/-    0.64      10.9 +/-    0.64  0.020 / 0.040
G05     75.6           67.2                9.4 +/-    0.32      10.1 +/-    0.32  0.030 / 0.040
G12     184.6          40.6               11.9 +/-    1.80      17.1 +/-    1.80  0.060 / 0.080
G21     263.9          10.9                2.1 +/-   25.20       5.7 +/-   25.20  0.060 / 0.080
G25     252.6          56.9               10.9 +/-    0.61      12.8 +/-    0.61  0.080 / 0.070
G29     321.7          45.0                9.2 +/-    1.00      12.4 +/-    1.00  0.040 / 0.080