PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-02:12:40
G02     52.9           37.9                8.2 +/-    2.15      12.4 +/-    2.15  0.040 / 0.060
G05     73.4           66.3                9.1 +/-    0.38       9.8 +/-    0.38  0.070 / 0.080
G12     186.4          42.1               11.8 +/-    0.60      16.6 +/-    0.60  0.040 / 0.030
G21     264.1          11.4                1.9 +/-   18.66       5.2 +/-   18.66  0.040 / 0.030
G25     253.8          56.7                9.6 +/-    1.54      11.2 +/-    1.54  0.170 / 0.290
G29     322.0          45.6                9.9 +/-    0.67      13.2 +/-    0.67  0.180 / 0.300