PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-16:42:50
G02     215.1          55.6                9.9 +/-    1.09      11.7 +/-    1.09  0.050 / 0.080
G06     59.9           73.8                7.6 +/-    1.04       7.9 +/-    1.04  0.070 / 0.060
G12     319.3          38.7                7.1 +/-    0.69      10.5 +/-    0.69  0.090 / 0.070
G17     56.5           32.5                6.1 +/-    0.69      10.2 +/-    0.69  0.030 / 0.090
G19     32.8           53.0                7.1 +/-    0.63       8.6 +/-    0.63  0.040 / 0.060
G24     265.8          42.4                8.7 +/-    1.19      12.2 +/-    1.19  0.040 / 0.060
G28     121.2          15.3                7.2 +/-    1.37      17.8 +/-    1.37  0.050 / 0.060