PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-07:58:00
G02     210.7          51.9                5.3 +/-    0.97       6.6 +/-    0.97  0.040 / 0.060
G06     99.2           80.2                5.3 +/-    0.65       5.4 +/-    0.65  0.060 / 0.070
G12     315.3          28.5                3.0 +/-    1.96       5.5 +/-    1.96  0.080 / 0.130
G17     52.5           35.0                2.2 +/-    1.24       3.5 +/-    1.24  0.090 / 0.110
G19     26.3           55.9              -17.5 +/-    0.68     -20.7 +/-    0.68  0.040 / 0.030
G24     270.1          44.0                5.1 +/-    1.12       7.0 +/-    1.12  0.040 / 0.020
G28     116.3          21.3                5.6 +/-    2.41      12.0 +/-    2.41  0.120 / 0.190