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               11.3 +/-    0.82      25.0 +/-    0.82  0.050 / 0.030
G07     88.3           64.9                9.8 +/-    0.50      10.7 +/-    0.50  0.040 / 0.040
G08     43.7           28.5                7.3 +/-    0.68      13.2 +/-    0.68  0.110 / 0.170
G09     175.6          21.5               10.6 +/-    0.81      22.5 +/-    0.81  0.120 / 0.150
G11     102.0          41.1               11.6 +/-    0.52      16.6 +/-    0.52  0.040 / 0.090
G13     316.0          22.0                5.7 +/-    1.59      12.0 +/-    1.59  0.040 / 0.080
G17     202.6          27.4                9.7 +/-    1.24      17.9 +/-    1.24  0.030 / 0.040
G18     90.7           22.0                9.5 +/-    1.10      19.9 +/-    1.10  0.030 / 0.030
G28     298.6          58.5                8.4 +/-    0.84       9.7 +/-    0.84  0.040 / 0.070
G30     351.3          70.9                8.5 +/-    0.94       9.0 +/-    0.94  0.040 / 0.060