PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-13:57:30
G02     204.9          30.3                7.4 +/-    1.42      12.9 +/-    1.42  0.110 / 0.250
G03     58.1           9.4                 6.1 +/-    2.15      17.1 +/-    2.15  0.090 / 0.190
G06     155.9          70.1                8.3 +/-    0.49       8.8 +/-    0.49  0.090 / 0.140
G12     308.7          18.7                5.1 +/-    1.17      11.7 +/-    1.17  0.080 / 0.150
G17     37.3           47.9                6.8 +/-    1.73       8.9 +/-    1.73  0.070 / 0.070
G19     349.4          66.8                6.2 +/-    0.45       6.7 +/-    0.45  0.060 / 0.080
G24     295.5          39.8                7.3 +/-    5.73      10.6 +/-    5.73  0.030 / 0.030
G28     102.2          31.8                7.4 +/-    0.82      12.5 +/-    0.82  0.040 / 0.020