PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-19:58:10
G01     66.2           32.3               12.0 +/-    1.75      20.1 +/-    1.75  0.070 / 0.220
G07     139.7          27.8               14.9 +/-    1.24      27.3 +/-    1.24  0.080 / 0.210
G11     51.7           28.8               11.3 +/-    1.77      20.3 +/-    1.77  0.030 / 0.040
G13     269.6          36.8               13.4 +/-    2.13      20.6 +/-    2.13  0.040 / 0.040
G15     299.4          15.7               10.0 +/-    1.02      24.3 +/-    1.02  0.060 / 0.110
G17     239.3          68.9               15.1 +/-    0.46      16.0 +/-    0.46  0.060 / 0.130
G18     46.3           16.4                9.6 +/-    1.49      23.0 +/-    1.49  0.110 / 0.180
G19     227.3          44.3               16.1 +/-    2.06      21.9 +/-    2.06  0.090 / 0.240
G28     26.9           58.2               14.3 +/-    1.41      16.6 +/-    1.41  0.040 / 0.050
G30     139.2          56.9               15.3 +/-    0.35      17.8 +/-    0.35  0.040 / 0.050