PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-13:27:50
G03     197.7          38.0                8.8 +/-    1.33      13.2 +/-    1.33  0.110 / 0.330
G07     273.1          26.7               10.9 +/-    1.29      20.5 +/-    1.29  0.090 / 0.320
G08     154.6          12.7                8.4 +/-    3.60      22.2 +/-    3.60  0.090 / 0.140
G09     318.5          45.4                6.9 +/-    1.37       9.3 +/-    1.37  0.080 / 0.130
G16     53.4           53.5                7.1 +/-    0.30       8.6 +/-    0.30  0.140 / 0.220
G22     180.4          20.0                7.5 +/-    1.22      16.6 +/-    1.22  0.120 / 0.250
G23     16.1           79.2                7.6 +/-    0.49       7.7 +/-    0.49  0.040 / 0.050
G26     43.6           25.0                8.4 +/-    1.77      16.4 +/-    1.77  0.050 / 0.050
G27     118.3          23.8                9.3 +/-    1.77      18.6 +/-    1.77  0.030 / 0.030