PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-23:42:40
G01     118.4          18.5               11.1 +/-    1.16      25.3 +/-    1.16  0.070 / 0.160
G07     82.1           66.3               11.0 +/-    0.49      11.8 +/-    0.49  0.050 / 0.140
G08     45.4           33.1                8.6 +/-    0.64      14.2 +/-    0.64  0.040 / 0.080
G09     177.6          26.1               11.1 +/-    1.39      21.2 +/-    1.39  0.040 / 0.060
G11     109.6          40.2               12.1 +/-    0.83      17.5 +/-    0.83  0.110 / 0.310
G13     317.7          19.4                9.6 +/-    0.98      21.6 +/-    0.98  0.130 / 0.250
G17     202.5          23.8               10.8 +/-    1.17      21.7 +/-    1.17  0.040 / 0.060
G28     295.4          58.0                9.4 +/-    0.85      10.8 +/-    0.85  0.040 / 0.070
G30     359.5          71.9               10.2 +/-    0.77      10.7 +/-    0.77  0.110 / 0.390