PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-23:13:10
G02     240.9          76.1               11.5 +/-    0.44      11.8 +/-    0.44  0.050 / 0.070
G05     171.0          16.5               17.1 +/-    1.19      41.0 +/-    1.19  0.080 / 0.070
G06     40.9           58.1               11.3 +/-    0.47      13.1 +/-    0.47  0.040 / 0.050
G12     321.7          52.2               11.5 +/-    0.59      14.2 +/-    0.59  0.050 / 0.050
G17     69.2           25.2               12.2 +/-    1.37      23.8 +/-    1.37  0.050 / 0.040
G19     55.5           40.2               11.2 +/-    1.61      16.2 +/-    1.61  0.060 / 0.040
G24     245.4          35.0               15.4 +/-    1.76      24.4 +/-    1.76  0.140 / 0.260
G25     316.5          11.3              -10.2 +/-   28.86     -27.6 +/-   28.86  0.170 / 0.290