PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-08:42:50
G02     217.7          61.2                6.3 +/-    1.47       7.1 +/-    1.47  0.050 / 0.070
G06     55.8           74.6                4.5 +/-    0.55       4.6 +/-    0.55  0.060 / 0.060
G12     318.7          37.0                4.4 +/-    2.59       6.7 +/-    2.59  0.040 / 0.050
G17     60.0           29.0                5.0 +/-    1.80       9.0 +/-    1.80  0.030 / 0.040
G19     38.3           50.0                4.1 +/-    1.69       5.2 +/-    1.69  0.120 / 0.320
G24     256.8          41.9                5.8 +/-    3.04       8.2 +/-    3.04  0.210 / 0.320
G28     123.0          14.3                7.7 +/-    2.45      19.5 +/-    2.45  0.050 / 0.050