PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-14:27:50
G01     116.3          19.9               11.4 +/-    1.46      25.1 +/-    1.46  0.100 / 0.200
G07     88.3           64.9               10.3 +/-    0.72      11.2 +/-    0.72  0.070 / 0.170
G08     43.7           28.5                8.8 +/-    2.15      16.0 +/-    2.15  0.040 / 0.030
G09     175.6          21.5               11.0 +/-    2.42      23.4 +/-    2.42  0.040 / 0.030
G11     102.0          41.1               11.2 +/-    0.75      16.0 +/-    0.75  0.040 / 0.030
G13     316.0          22.0                8.2 +/-    2.11      17.2 +/-    2.11  0.030 / 0.030
G17     202.6          27.4                9.6 +/-    2.11      17.7 +/-    2.11  0.130 / 0.170
G18     90.7           22.0                9.4 +/-    1.35      19.7 +/-    1.35  0.140 / 0.210
G28     298.6          58.5                9.1 +/-    1.24      10.5 +/-    1.24  0.110 / 0.190
G30     351.3          70.9                9.7 +/-    0.37      10.3 +/-    0.37  0.120 / 0.200