PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-09:57:40
G01     120.9          16.5                6.1 +/-    1.38      14.7 +/-    1.38  0.040 / 0.030
G07     76.4           67.0                6.6 +/-    0.51       7.1 +/-    0.51  0.030 / 0.020
G08     45.2           31.6                4.2 +/-    1.37       7.2 +/-    1.37  0.130 / 0.200
G09     174.2          24.1                6.5 +/-    0.95      13.0 +/-    0.95  0.130 / 0.210
G11     107.9          39.3                8.6 +/-    0.83      12.7 +/-    0.83  0.130 / 0.230
G13     318.5          18.1                3.6 +/-    2.36       8.2 +/-    2.36  0.150 / 0.180
G17     200.6          23.8                6.0 +/-    3.20      12.1 +/-    3.20  0.030 / 0.020
G18     95.1           20.0                5.6 +/-    1.43      12.4 +/-    1.43  0.020 / 0.030
G28     287.7          56.0                6.0 +/-    1.94       7.1 +/-    1.94  0.080 / 0.180
G30     340.3          65.8                5.8 +/-    0.76       6.3 +/-    0.76  0.090 / 0.200