PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-12:58:00
G02     205.3          33.7                5.5 +/-    1.83       8.9 +/-    1.83  0.060 / 0.080
G06     151.8          72.4                5.8 +/-    0.59       6.1 +/-    0.59  0.070 / 0.070
G12     309.7          19.9                1.6 +/-    1.59       3.5 +/-    1.59  0.100 / 0.170
G17     39.9           45.8                3.9 +/-    0.66       5.1 +/-    0.66  0.140 / 0.210
G19     355.9          65.6                3.4 +/-    0.41       3.7 +/-    0.41  0.040 / 0.020
G24     292.1          41.1                5.6 +/-    8.18       8.0 +/-    8.18  0.040 / 0.020
G28     104.5          30.3                4.9 +/-    1.31       8.5 +/-    1.31  0.030 / 0.030