PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-09:58:10
G01     112.3          22.5                4.7 +/-    0.84       9.8 +/-    0.84  0.030 / 0.040
G07     98.2           61.5                4.6 +/-    0.48       5.1 +/-    0.48  0.030 / 0.030
G08     42.3           23.2                1.8 +/-    0.78       3.6 +/-    0.78  0.050 / 0.070
G09     172.8          14.7                5.0 +/-    1.31      12.5 +/-    1.31  0.050 / 0.060
G11     94.9           42.1                5.9 +/-    0.71       8.3 +/-    0.71  0.020 / 0.030
G13     313.3          25.4                2.2 +/-    0.93       4.3 +/-    0.93  0.030 / 0.050
G17     203.2          33.8                5.2 +/-    1.73       8.4 +/-    1.73  0.110 / 0.240
G18     84.8           23.0                2.7 +/-    0.87       5.4 +/-    0.87  0.100 / 0.220
G28     305.4          59.4                3.4 +/-    0.58       3.9 +/-    0.58  0.080 / 0.180
G30     358.1          73.8                4.1 +/-    0.71       4.3 +/-    0.71  0.080 / 0.220