PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-21:28:10
G01     39.5           13.7                9.8 +/-    1.02      25.1 +/-    1.02  0.170 / 0.350
G02     199.2          12.2               24.5 +/-    3.38      65.3 +/-    3.38  0.070 / 0.410
G06     173.4          43.8               18.3 +/-    1.13      25.1 +/-    1.13  0.080 / 0.160
G13     234.8          19.6               18.0 +/-    0.93      40.0 +/-    0.93  0.070 / 0.150
G15     267.9          10.9               11.6 +/-    2.93      31.8 +/-    2.93  0.180 / 0.300
G17     359.8          69.7               13.7 +/-    0.83      14.5 +/-    0.83  0.130 / 0.330
G19     285.9          69.6               12.9 +/-    0.69      13.6 +/-    0.69  0.060 / 0.090
G24     315.1          22.4                9.0 +/-    1.84      18.6 +/-    1.84  0.040 / 0.080
G28     76.7           44.8               14.2 +/-    0.53      19.3 +/-    0.53  0.040 / 0.070
G30     155.2          23.0               18.7 +/-    2.21      38.3 +/-    2.21  0.050 / 0.070