PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/08-08:27:50
G01     110.9          23.3                7.8 +/-    2.03      15.8 +/-    2.03  0.030 / 0.020
G07     101.2          60.2                8.3 +/-    0.95       9.4 +/-    0.95  0.030 / 0.030
G08     42.0           21.6                6.4 +/-    2.79      13.5 +/-    2.79  0.030 / 0.030
G09     172.1          12.6                7.9 +/-    2.37      20.9 +/-    2.37  0.030 / 0.040
G11     92.5           42.3                8.3 +/-    1.22      11.7 +/-    1.22  0.070 / 0.180
G13     312.3          26.4                5.6 +/-    2.42      10.6 +/-    2.42  0.120 / 0.180
G17     203.5          35.8                8.8 +/-    1.15      13.7 +/-    1.15  0.090 / 0.150
G18     82.8           23.2                5.6 +/-    1.52      11.5 +/-    1.52  0.090 / 0.150
G28     307.7          59.7                7.1 +/-    1.61       8.1 +/-    1.61  0.190 / 0.270
G30     1.5            74.9                6.9 +/-    0.89       7.1 +/-    0.89  0.180 / 0.310