PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-02:12:20
G02     26.7           61.1               10.2 +/-    0.39      11.4 +/-    0.39  0.030 / 0.020
G05     147.9          55.4               12.5 +/-    0.83      14.8 +/-    0.83  0.030 / 0.010
G06     49.6           22.1                7.4 +/-    1.82      15.5 +/-    1.82  0.040 / 0.030
G12     217.7          76.1               10.4 +/-    0.97      10.7 +/-    0.97  0.050 / 0.030
G19     93.0           15.6                9.4 +/-    1.82      23.0 +/-    1.82  0.040 / 0.040
G25     307.4          46.6               11.5 +/-    0.82      15.1 +/-    0.82  0.040 / 0.050
G29     301.3          21.6                8.9 +/-    2.16      18.7 +/-    2.16  0.060 / 0.050