PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-22:57:40
G02     220.8          65.9               16.0 +/-    0.84      17.4 +/-    0.84  0.050 / 0.060
G06     48.2           69.1               12.1 +/-    0.33      12.9 +/-    0.33  0.040 / 0.060
G12     320.2          41.3               12.4 +/-    0.71      17.6 +/-    0.71  0.060 / 0.100
G17     59.8           31.9               10.5 +/-    1.51      17.8 +/-    1.51  0.090 / 0.090
G19     43.6           47.1               12.1 +/-    0.64      15.9 +/-    0.64  0.190 / 0.370
G24     258.5          40.2               16.0 +/-    4.06      23.1 +/-    4.06  0.280 / 0.340
G28     125.9          9.6                18.3 +/-    2.19      51.5 +/-    2.19  0.030 / 0.030