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 +/-    0.85       7.1 +/-    0.85  0.040 / 0.040
G06     55.8           74.6                4.4 +/-    0.64       4.6 +/-    0.64  0.040 / 0.050
G12     318.7          37.0                3.8 +/-    1.06       5.8 +/-    1.06  0.050 / 0.070
G17     60.0           29.0                3.1 +/-    1.51       5.5 +/-    1.51  0.040 / 0.080
G19     38.3           50.0                3.0 +/-    0.39       3.7 +/-    0.39  0.060 / 0.080
G24     256.8          41.9                6.1 +/-    1.40       8.6 +/-    1.40  0.050 / 0.080
G28     123.0          14.3                7.5 +/-    1.55      19.0 +/-    1.55  0.050 / 0.100