PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-08:12:50
G01     110.3          23.7                4.5 +/-    1.38       9.1 +/-    1.38  0.030 / 0.030
G07     102.3          59.6                7.5 +/-    0.65       8.6 +/-    0.65  0.040 / 0.030
G08     41.9           21.0                3.3 +/-    0.96       7.0 +/-    0.96  0.030 / 0.040
G09     172.1          12.3                4.0 +/-    1.69      10.6 +/-    1.69  0.030 / 0.040
G11     91.6           42.3                6.9 +/-    0.37       9.7 +/-    0.37  0.080 / 0.200
G13     311.9          26.9                3.1 +/-    0.74       5.8 +/-    0.74  0.090 / 0.190
G17     203.7          36.5                7.5 +/-    2.06      11.6 +/-    2.06  0.080 / 0.210
G18     82.0           23.3                3.6 +/-    1.24       7.2 +/-    1.24  0.080 / 0.170
G28     308.8          59.8                6.3 +/-    0.51       7.2 +/-    0.51  0.060 / 0.200
G30     3.3            75.4                6.6 +/-    0.67       6.8 +/-    0.67  0.060 / 0.190