PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-14:27:50
G02     202.3          22.9                7.3 +/-    1.78      15.0 +/-    1.78  0.240 / 0.490
G06     163.8          61.6                8.9 +/-    0.78       9.9 +/-    0.78  0.390 / 0.580
G12     304.2          13.5                6.1 +/-    4.76      15.8 +/-    4.76  0.080 / 0.120
G17     29.9           54.1                7.2 +/-    0.88       8.6 +/-    0.88  0.070 / 0.080
G19     327.0          69.7                6.2 +/-    0.85       6.5 +/-    0.85  0.140 / 0.220
G24     304.8          34.7                7.3 +/-    1.69      11.6 +/-    1.69  0.130 / 0.250
G28     93.4           36.8                8.7 +/-    0.96      13.4 +/-    0.96  0.050 / 0.030
G30     158.3          11.4                8.9 +/-    3.48      24.1 +/-    3.48  0.030 / 0.030