PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-14:28:10
G02     214.8          52.4                6.7 +/-    1.02       8.2 +/-    1.02  0.050 / 0.080
G06     65.2           75.8                6.1 +/-    0.59       6.3 +/-    0.59  0.040 / 0.080
G12     318.5          36.5                5.3 +/-    1.10       8.2 +/-    1.10  0.020 / 0.020
G17     55.6           33.1                4.5 +/-    1.10       7.4 +/-    1.10  0.030 / 0.020
G19     29.2           54.7                4.5 +/-    1.89       5.3 +/-    1.89  0.050 / 0.060
G24     266.4          42.8                4.8 +/-    1.15       6.7 +/-    1.15  0.060 / 0.070
G28     120.2          16.7                7.0 +/-    1.48      16.7 +/-    1.48  0.040 / 0.030