PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-00:57:40
G01     41.1           16.3                7.5 +/-    2.09      18.1 +/-    2.09  0.210 / 0.170
G06     175.7          38.6               12.4 +/-    1.09      18.5 +/-    1.09  0.100 / 0.200
G13     238.1          21.9               11.3 +/-    2.25      23.7 +/-    2.25  0.020 / 0.030
G15     270.2          12.4                9.5 +/-    2.25      25.1 +/-    2.25  0.020 / 0.020
G17     353.2          71.9                9.5 +/-    0.38      10.0 +/-    0.38  0.050 / 0.080
G19     277.9          69.0                9.0 +/-    0.63       9.6 +/-    0.63  0.060 / 0.080
G24     316.7          18.9                7.5 +/-    1.85      17.0 +/-    1.85  0.040 / 0.050
G28     72.4           46.4                8.8 +/-    1.59      11.6 +/-    1.59  0.040 / 0.060
G30     153.8          24.6               12.8 +/-    1.61      25.2 +/-    1.61  0.110 / 0.210