PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-12:42:40
G01     123.5          14.5                6.3 +/-    2.01      15.8 +/-    2.01  0.040 / 0.030
G07     66.2           68.6                5.8 +/-    0.43       6.2 +/-    0.43  0.030 / 0.030
G08     47.0           34.9                5.5 +/-    1.17       8.7 +/-    1.17  0.030 / 0.030
G09     176.2          29.6                6.8 +/-    1.61      12.1 +/-    1.61  0.040 / 0.020
G11     112.2          37.7                6.4 +/-    1.64       9.6 +/-    1.64  0.110 / 0.220
G13     319.7          15.4                3.5 +/-    2.15       8.6 +/-    2.15  0.150 / 0.210
G17     200.4          19.7                6.0 +/-    2.41      13.2 +/-    2.41  0.200 / 0.320
G18     99.1           18.7                5.0 +/-    1.89      11.4 +/-    1.89  0.110 / 0.340
G28     283.2          55.0                5.1 +/-    2.70       6.1 +/-    2.70  0.100 / 0.170
G30     336.7          63.3                5.2 +/-    0.42       5.8 +/-    0.42  0.090 / 0.220