PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-21:27:10
G02     221.0          65.1               12.2 +/-    1.19      13.3 +/-    1.19  0.060 / 0.090
G06     48.0           68.7               10.3 +/-    0.87      11.0 +/-    0.87  0.060 / 0.090
G12     320.4          42.1                8.9 +/-    1.48      12.6 +/-    1.48  0.050 / 0.100
G17     60.4           31.0                9.7 +/-    0.77      16.7 +/-    0.77  0.060 / 0.100
G19     43.0           47.5                9.2 +/-    0.29      12.0 +/-    0.29  0.060 / 0.080
G24     258.0          40.2               11.8 +/-    1.31      17.1 +/-    1.31  0.040 / 0.080
G28     125.9          9.8                13.0 +/-    2.00      36.5 +/-    2.00  0.040 / 0.040