PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-00:58:00
G02     211.3          56.0               12.2 +/-    0.56      14.3 +/-    0.56  0.060 / 0.100
G06     79.4           78.6               10.4 +/-    0.28      10.5 +/-    0.28  0.070 / 0.100
G12     316.5          30.6                8.9 +/-    1.04      15.5 +/-    1.04  0.060 / 0.060
G17     49.8           39.6                9.4 +/-    1.43      13.8 +/-    1.43  0.050 / 0.070
G19     31.7           53.4               10.1 +/-    0.88      12.2 +/-    0.88  0.030 / 0.020
G24     273.5          42.3                8.3 +/-    2.01      11.6 +/-    2.01  0.020 / 0.030
G28     118.9          17.4               11.2 +/-    1.75      26.2 +/-    1.75  0.110 / 0.180