PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-11:57:40
G01     223.6          14.2                5.9 +/-    2.59      14.9 +/-    2.59  0.110 / 0.200
G03     273.1          70.1                7.8 +/-    0.77       8.2 +/-    0.77  0.190 / 0.180
G14     88.3           25.5                5.6 +/-    1.71      10.9 +/-    1.71  0.260 / 0.260
G16     140.1          49.9                8.5 +/-    0.89      10.7 +/-    0.89  0.150 / 0.250
G22     200.0          65.2                8.7 +/-    0.52       9.5 +/-    0.52  0.030 / 0.030
G23     312.9          43.5                5.6 +/-    0.72       7.7 +/-    0.72  0.030 / 0.030
G26     86.2           53.6                7.2 +/-    0.72       8.7 +/-    0.72  0.040 / 0.050
G31     47.5           26.7                4.6 +/-    2.70       8.7 +/-    2.70  0.040 / 0.060