PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-13:28:00
G03     235.7          68.4                8.8 +/-    1.31       9.4 +/-    1.31  0.090 / 0.240
G09     303.0          17.5                5.2 +/-    1.98      12.2 +/-    1.98  0.100 / 0.250
G14     97.8           18.7                8.4 +/-    1.36      19.1 +/-    1.36  0.060 / 0.060
G16     124.4          59.0               10.2 +/-    0.48      11.7 +/-    0.48  0.050 / 0.070
G22     189.6          52.9               10.0 +/-    1.02      12.2 +/-    1.02  0.030 / 0.050
G23     322.8          52.7                9.1 +/-    1.10      11.2 +/-    1.10  0.030 / 0.060
G26     67.7           50.4                8.5 +/-    0.31      10.7 +/-    0.31  0.060 / 0.060
G31     52.6           18.1                5.9 +/-    0.88      13.7 +/-    0.88  0.050 / 0.050