PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/08-03:57:50
G02     229.9          73.3                3.5 +/-    0.49       3.6 +/-    0.49  0.220 / 0.390
G05     172.9          12.5                3.4 +/-    2.12       9.0 +/-    2.12  0.180 / 0.270
G06     42.9           65.5                1.5 +/-    0.62       1.6 +/-    0.62  0.030 / 0.050
G12     320.9          45.4                2.2 +/-    0.72       3.0 +/-    0.72  0.030 / 0.050
G17     65.5           27.5                0.9 +/-    1.93       1.6 +/-    1.93  0.050 / 0.090
G19     51.8           42.0                1.0 +/-    2.13       1.4 +/-    2.13  0.040 / 0.090
G24     252.0          37.6                2.6 +/-    1.39       3.9 +/-    1.39  0.020 / 0.030