PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-09:42:40
G01     123.4          14.6                6.2 +/-    2.16      15.5 +/-    2.16  0.100 / 0.380
G07     68.2           68.2                5.5 +/-    0.64       5.9 +/-    0.64  0.110 / 0.350
G08     46.7           34.2                3.7 +/-    0.40       6.0 +/-    0.40  0.030 / 0.040
G09     174.4          27.1                6.3 +/-    1.62      11.7 +/-    1.62  0.030 / 0.030
G11     111.6          37.9                6.5 +/-    0.64       9.8 +/-    0.64  0.040 / 0.060
G13     319.6          15.7                1.4 +/-    2.13       3.4 +/-    2.13  0.040 / 0.060
G17     200.0          20.7                7.1 +/-    0.71      15.4 +/-    0.71  0.100 / 0.240
G18     98.1           18.7                5.0 +/-    1.36      11.3 +/-    1.36  0.100 / 0.230
G28     282.6          54.6                6.9 +/-    0.66       8.3 +/-    0.66  0.030 / 0.040
G30     336.2          63.2                4.2 +/-    0.57       4.6 +/-    0.57  0.020 / 0.040