PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-15:42:50
G01     41.4           17.1                7.2 +/-    2.82      17.1 +/-    2.82  0.050 / 0.060
G06     174.6          36.8               11.3 +/-    1.34      17.4 +/-    1.34  0.040 / 0.060
G13     238.2          23.9               12.0 +/-    2.00      24.1 +/-    2.00  0.270 / 0.380
G15     272.5          12.8                9.1 +/-    1.48      23.8 +/-    1.48  0.250 / 0.300
G17     347.8          73.6                9.5 +/-    0.24       9.9 +/-    0.24  0.030 / 0.030
G19     272.9          69.3                9.4 +/-    1.00      10.0 +/-    1.00  0.020 / 0.030
G24     317.1          17.0                8.3 +/-    2.46      19.7 +/-    2.46  0.040 / 0.050
G28     62.1           52.1               10.1 +/-    0.52      12.4 +/-    0.52  0.040 / 0.050
G30     153.6          28.4               10.6 +/-    1.13      19.3 +/-    1.13  0.070 / 0.240