PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-14:27:30
G02     202.3          22.9                6.8 +/-    1.40      13.9 +/-    1.40  0.210 / 0.390
G06     163.8          61.6                9.9 +/-    0.83      11.0 +/-    0.83  0.160 / 0.360
G12     304.2          13.5                5.3 +/-    1.76      13.7 +/-    1.76  0.130 / 0.100
G17     29.9           54.1                8.1 +/-    0.63       9.8 +/-    0.63  0.160 / 0.100
G19     327.0          69.7                7.4 +/-    0.61       7.9 +/-    0.61  0.140 / 0.290
G24     304.8          34.7                7.7 +/-    1.11      12.3 +/-    1.11  0.100 / 0.250
G28     93.4           36.8                7.4 +/-    0.41      11.3 +/-    0.41  0.050 / 0.030
G30     158.3          11.4                9.1 +/-    3.45      24.6 +/-    3.45  0.060 / 0.040