PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-06:12:30
G02     354.0          77.7                1.1 +/-    0.49       1.2 +/-    0.49  0.060 / 0.080
G05     163.3          34.3                5.1 +/-    1.83       8.2 +/-    1.83  0.050 / 0.100
G06     41.0           42.6                2.7 +/-    1.42       3.8 +/-    1.42  0.100 / 0.040
G12     312.0          69.6                1.3 +/-    0.41       1.4 +/-    0.41  0.050 / 0.050
G17     85.8           12.6                3.8 +/-    1.43       9.9 +/-    1.43  0.070 / 0.270
G19     75.5           27.0                1.8 +/-    2.09       3.4 +/-    2.09  0.170 / 0.130
G24     229.1          22.9                4.9 +/-    2.86      10.0 +/-    2.86  0.040 / 0.020
G25     317.4          28.2                0.6 +/-    1.70       1.0 +/-    1.70  0.040 / 0.040