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                9.9 +/-    0.75      10.0 +/-    0.75  0.030 / 0.050
G05     168.4          22.7               16.6 +/-    2.57      34.2 +/-    2.57  0.030 / 0.040
G06     40.1           51.0                9.4 +/-    0.66      11.8 +/-    0.66  0.040 / 0.140
G12     320.9          59.5               10.1 +/-    0.79      11.5 +/-    0.79  0.040 / 0.150
G17     75.1           20.9               10.5 +/-    0.92      22.7 +/-    0.92  0.080 / 0.140
G19     62.5           36.0               10.3 +/-    0.71      16.1 +/-    0.71  0.070 / 0.150
G24     238.4          30.8               15.2 +/-    2.81      26.2 +/-    2.81  0.040 / 0.040
G25     317.6          17.3                9.4 +/-    2.00      22.2 +/-    2.00  0.040 / 0.040