PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-23:12:30
G02     270.5          80.7                9.3 +/-    0.70       9.4 +/-    0.70  0.030 / 0.030
G05     168.4          22.7               15.2 +/-    1.79      31.2 +/-    1.79  0.040 / 0.030
G06     40.1           51.0               10.3 +/-    0.52      12.8 +/-    0.52  0.080 / 0.180
G12     320.9          59.5                9.0 +/-    0.40      10.3 +/-    0.40  0.110 / 0.180
G17     75.1           20.9               10.5 +/-    0.93      22.7 +/-    0.93  0.070 / 0.150
G19     62.5           36.0                9.0 +/-    0.53      14.0 +/-    0.53  0.070 / 0.110
G24     238.4          30.8               12.1 +/-    2.88      20.8 +/-    2.88  0.030 / 0.040
G25     317.6          17.3                8.1 +/-    1.69      19.0 +/-    1.69  0.040 / 0.040