PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-07:57:40
G01     114.9          20.7                5.5 +/-    1.51      12.0 +/-    1.51  0.040 / 0.030
G07     93.1           63.0                7.1 +/-    0.62       7.9 +/-    0.62  0.040 / 0.020
G08     42.8           25.3                5.1 +/-    2.46       9.9 +/-    2.46  0.030 / 0.030
G09     172.9          16.8                6.0 +/-    1.28      14.3 +/-    1.28  0.030 / 0.040
G11     98.4           41.5                7.4 +/-    0.91      10.5 +/-    0.91  0.120 / 0.150
G13     315.0          23.4                3.8 +/-    1.80       7.8 +/-    1.80  0.100 / 0.240
G17     202.1          31.4                7.3 +/-    1.73      12.3 +/-    1.73  0.100 / 0.180
G18     87.3           22.2                4.9 +/-    0.94      10.2 +/-    0.94  0.110 / 0.170
G28     299.3          58.4                6.4 +/-    1.11       7.4 +/-    1.11  0.170 / 0.300
G30     351.3          71.4                6.5 +/-    0.57       6.8 +/-    0.57  0.170 / 0.380