PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-23:57:50
G08     319.1          12.8                6.4 +/-    2.49      16.7 +/-    2.49  0.050 / 0.040
G10     307.0          54.8                8.1 +/-    1.07       9.6 +/-    1.07  0.050 / 0.040
G14     212.1          16.5               13.7 +/-    4.84      32.9 +/-    4.84  0.030 / 0.050
G15     45.9           26.1                7.2 +/-    1.44      13.7 +/-    1.44  0.040 / 0.060
G20     298.9          47.9                6.5 +/-    0.61       8.4 +/-    0.61  0.030 / 0.040
G21     111.8          71.0               10.4 +/-    0.78      11.0 +/-    0.78  0.040 / 0.040
G24     88.7           28.1                8.4 +/-    1.32      15.4 +/-    1.32  0.060 / 0.120
G27     293.7          36.3                8.9 +/-    1.54      13.8 +/-    1.54  0.060 / 0.100
G32     213.1          40.0               11.3 +/-    1.49      16.4 +/-    1.49  0.060 / 0.070