PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-15:58:10
G08     300.1          21.6                6.4 +/-    1.88      13.6 +/-    1.88  0.060 / 0.090
G10     353.8          62.4                4.3 +/-    1.01       4.7 +/-    1.01  0.050 / 0.090
G14     225.5          40.7               11.1 +/-    0.56      16.0 +/-    0.56  0.040 / 0.070
G18     58.7           52.4                6.3 +/-    0.45       7.8 +/-    0.45  0.040 / 0.070
G21     142.6          42.0               11.0 +/-    0.66      15.5 +/-    0.66  0.060 / 0.100
G24     62.4           28.4                4.5 +/-    0.42       8.2 +/-    0.42  0.060 / 0.100
G27     259.3          34.1                9.1 +/-    1.20      14.7 +/-    1.20  0.030 / 0.030
G32     236.5          62.9                9.8 +/-    0.43      10.9 +/-    0.43  0.040 / 0.030