PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-04:12:30
G02     351.1          78.3                3.8 +/-    0.33       3.9 +/-    0.33  0.030 / 0.030
G05     163.2          34.0                6.3 +/-    1.00      10.2 +/-    1.00  0.030 / 0.030
G06     41.2           41.9                4.2 +/-    0.96       5.9 +/-    0.96  0.070 / 0.080
G12     312.6          69.5                4.2 +/-    0.49       4.4 +/-    0.49  0.040 / 0.080
G17     84.7           14.1                6.0 +/-    1.93      15.3 +/-    1.93  0.090 / 0.200
G19     74.6           27.7                5.0 +/-    1.93       9.2 +/-    1.93  0.100 / 0.190
G24     229.3          23.2                6.8 +/-    3.23      13.9 +/-    3.23  0.220 / 0.240
G25     317.5          27.5                4.1 +/-    2.12       7.5 +/-    2.12  0.210 / 0.190