PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-14:27:40
G03     204.8          51.2                9.3 +/-    1.36      11.5 +/-    1.36  0.070 / 0.110
G07     261.6          18.5                8.3 +/-    1.12      18.9 +/-    1.12  0.060 / 0.120
G09     313.1          32.8                6.7 +/-    1.69      11.0 +/-    1.69  0.030 / 0.060
G16     76.8           62.6                8.0 +/-    0.36       8.9 +/-    0.36  0.030 / 0.040
G22     182.8          32.1                9.3 +/-    1.41      15.6 +/-    1.41  0.030 / 0.050
G23     345.0          69.2                7.6 +/-    1.41       8.1 +/-    1.41  0.030 / 0.040
G26     48.4           36.7                7.1 +/-    0.70      10.9 +/-    0.70  0.050 / 0.080
G27     129.3          14.8               11.7 +/-    2.75      29.2 +/-    2.75  0.050 / 0.090