PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/11-13:27:50
G02     253.3          76.6                5.0 +/-    0.90       5.2 +/-    0.90  0.120 / 0.250
G05     173.1          17.7                8.3 +/-    1.46      19.2 +/-    1.46  0.140 / 0.260
G06     39.9           53.0                3.5 +/-    0.55       4.2 +/-    0.55  0.110 / 0.120
G12     321.6          59.0                4.1 +/-    0.69       4.7 +/-    0.69  0.120 / 0.130
G17     75.7           17.7                4.4 +/-    0.99      10.2 +/-    0.99  0.040 / 0.040
G19     58.9           38.9                4.5 +/-    0.89       6.7 +/-    0.89  0.040 / 0.040
G24     236.7          31.4                8.1 +/-    2.43      13.8 +/-    2.43  0.060 / 0.150
G25     317.2          19.4                3.6 +/-    1.38       8.1 +/-    1.38  0.080 / 0.190