PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-04:57:50
G01     318.5          19.3                7.2 +/-    2.59      16.1 +/-    2.59  0.240 / 0.290
G08     255.8          12.3                8.8 +/-    2.15      23.3 +/-    2.15  0.200 / 0.290
G10     82.5           52.1                5.5 +/-    0.71       6.8 +/-    0.71  0.040 / 0.060
G11     301.3          24.0                6.5 +/-    1.76      12.9 +/-    1.76  0.040 / 0.060
G14     295.9          69.7                5.5 +/-    0.65       5.8 +/-    0.65  0.180 / 0.330
G18     303.1          41.4                5.7 +/-    1.41       8.2 +/-    1.41  0.150 / 0.340
G20     100.7          42.4                5.3 +/-    0.93       7.4 +/-    0.93  0.030 / 0.040
G22     301.8          12.4                8.4 +/-    2.52      22.3 +/-    2.52  0.030 / 0.040
G31     173.4          45.8                5.5 +/-    1.80       7.3 +/-    1.80  0.080 / 0.240
G32     14.7           65.0                3.8 +/-    0.73       4.1 +/-    0.73  0.090 / 0.220